Which of the following is used as a moderator in nuclear reactor?Graphite
Which element that does not occur in nature but can be produced artificially?Plutonium
Which rocks is transformed into marble?Limestone
By which number the quality of gasoline’ sample is determined?By its octane number
What is the principal reason for the formation of metamorphic rocks?Extreme heat and pressure
Which type of glass is used for making glass reinforced plastic?Quartz glass
When temperature is gradually decreased, what is the specific heat of substance?Decreased
Which metal is non toxic in nature?Gold
Which is the element that has the highest first ionization potential?Nitrogen
Which transition metal is in liquid state?Mercury
Temporary hardness of water is due to the presence of which thing?Magnesium bicarbonate
Which air pollutant affect the nervous system of man?Lead
Which oxyacid of halogen has maximum acidic nature?HClO4
What is the characteristic odour of garlic?A sulphur compound
What can be the maximum duration of totality for a solar eclipse?7 minutes 40 seconds
Which of the following is good nuclear fuel?Plutonium-239
Which is the essential element in all organic compounds?Carbon
Salts of which element pro vide colours to fireworks?Strontiur and barium
Leukaemia or blood cancer is characterised by abnormal increase of which cells?White blood cells
What does Oxidation involve?Loss of electrons
In colourful diamond, Why are different colours present?Due to impurities
What is the number of unpaired electrons in carbon atom?2
When some detergent is added to water, what will be the surface tension?Increases
What is reduction of oxide with carbon at high temperature called?Smelting
Conversion of chemical energy into electrical energy occurs in which thing?Battery
Purification of petroleum is carried out by which method?Fractional distillation
Which petroleum refinery product has the lowest boiling point?Gasoline
Which is purest form of iron?Wrought iron
Which is used as a coolant in nuclear reactors?Liquid sodium
What does M3 include?M1 + T.D
Which part of cinchona plant yields quinine?Bark
Liquefied Petroleum Gas consists of mainly which gases?Methane, butane and propane
Which is the secondary source of light in a fluorescent lamp?Mercury vapour
Which elements is obtained from sea weeds?Iodine
Which Bacteria convert atmospheric nitrogen into nitrogenous compound?Nitrogen fixing bacteria
In fireworks, how is the green flame produced?Because of barium
Water will be absorbed by root hairs, then how is when the external medium?Hypotonic
Who does a liquid drop tend to assume a spherical shape?Surface tension
Which substance does not have a melting point?Glass
Which was the first metal used by man?Copper
In which city of India, the diurnal range of temperature is maximum?New Delhi
What is the Number of water molecules present in Mohr’s salt?8
Why are Metals good conductor of heat than insulator?They contain free electrons
A mixture of camphor and benzoic acid can be easily separated by which method?Chemical method
If a material, placed in a magnetic field is thrown out of it, then how is the material?Diamagnetic
In organic compound, halogens are estimated by which method?Carius method
To which are Phototrophic and Geotropic movements linked?Auxin
A place having an average annual temperature of 27°C and an annual rainfall of over 200 cm.where is this?Singapore
Which is the most unreactive gas?Hydrogen
Which is the major oil producing area in U.S.A.?Texas-Louisiana belt
Which country leads the world in the export of oil?Saudi Arabia
With the rise of temperature, what happens in the speed of sound in a gas?Increases
The isotopes of chlorine with mass number 35 and 37 exist in which ratio?3:01
When the radius of the T.G. coil is decreased, what does happen in its sensitiveness?Increases
The United Nations declared 2014 as which International Year?Crystallography
Which colloids are solvent loving colloids?Lyophilic
The resistance of material increases with temperature. What is this?Metal
Which relates to the formation of the Himalayas?Folding of the geosyncline
Which material is very hard and very ductile?Nichrome
Which was the scientist who was responsible for the rejection of vital force theory?Lavoisier
Which award is associated with Agriculture?Bourlog Award
Which rays will deflect in electric field?Cathode rays
Most of hydrocarbons from petroleum are obtained by which method?Fractional distillation
The mass-energy relation is the outcome of which theory?Special theory of relativity
If the atmosphere is cooled, what is its capacity for water vapour?Lowered
Which alloy used in making heating elements for electric heating devices?Nichrome
Which purified oil does Aviation fuel for jet aeroplanes consist?Kerosene
Which metal is used for generation of Nuclear Power?Uranium
Anantapur district in Andhra Pradesh is famous for which metal?Gold
Silver is obtained from the lead & Zinc ares of Zawar mines in which city?Udaipur
Which is the best conductor of electricity?Silve
Through which material does sound travel slowest?Wood
Most of the plants obtain nitrogen from the soil in which from?Nitrates
Which polymer is used for making bulletproof material?Polyethylene
By which the maximum amount of energy in the present day world is provided?Coal
The first law of thermodynamics is concerned with the conservation of which thing?Energy
Which country is rich in oil?Indonesia
Which are macro-nutrients provided by inorganic fertilizers?Nitrogen, phosphorus and potassium
What is the average salt content in a litre of sea water?35 gm
In which Tyndall effect is not observed?Sugar solution
Which is Nuclease enzyme begin its attack from free end of polynucleotide?Exonuclease
Which is electrical circuits used to get smooth de output from a rectified circuit called?Filter
Which soil is best suited for cotton?Regur
Why is the yellow colour of urine?Due to the presence of urochrome
Which stare is the largest producer of coffee?Karnataka
Which enzyme changes maltose into glucose?Maltose
Which planet has the longest day and the shortest year?Mercury
Which polymer is widely used for making bullet proof material?Polyethylene
Which three important micronutrients are essential for humans?Copper, zinc and iodine
What is the name given to an almost circular coral reef inside which there is a lagoon?Atoll
Chocolates can be bad for health because of a high content of which element?Nickel
Galvanised iron sheets have a coating of which metal?Zinc
Chlorophyll is a naturally occuring chelate compound, what is the central metal in this?Magnesium
Chemical name of Washing soda is?Sodium carbonate
What will you put into pure water in order to pass electric current through it?Common Salt
Which fuel causes minimum environmental pollution?Hydrogen
Which hydrocarbon is mainly present in gobar gas?Methane
The cause of fractional atomic weights of elements?The presence of Isotopes
Which gas has maximum calorific value?Oil gas
Phosgene is obtained by the reaction of carbon monoxide and which gas?Chlorine
Which petroleum refinery product has the lowest boiling point?Gasoline
Which sets indicated the Aeolian process?Corrosion, attrition, deflation
Which compound does not contains an OH group?Aldehyde
Maximum hydrogen bonding would be observed in which compound?Methanol
What are the metallic constituents of hard water?Calcium, magnesium and iron
What is the maximum number of hydrogen bonds in a H2O molecule?4
The nitrogen percentage is the highest in which fertilizer?Urea
Which are the high-temperature superconductors?Ceramic oxides
Which Pollutant is produced from vehicles that cause mental diseases?Pb (lead)
What makes a lemon sour?Citric acid
In which type of coal percentage of carbon is the highest?Anthracite
What is formed when white phosphorus is heated at 540 K in the absence of air?Red phosphorus
Which acid is used to remove ink and rust stains and cloth?Oxalic acid
Which metal is present in photo films?Silver
Which is the highest grade of coal whose surface is shining and has the highest calorific value?Anthracite
Which is an element which never exhibits positive oxidation state in any of its compounds?Fluorine
Blue litmus paper is converted into red in solution of which thing?acid
Which is another name of RDX?Cycionite
What is the negative logarithmic value of hydrogen on called?pH
A bee-sting leaves an acid which causes pain and irritation. which is that injected acid?Methanoic acid
In an atomic nucleus, by which force are neutrons and protons held together?Exchange forces
By which a mixture of naphthalene and benzoic acid can be separated?Chromatography
By which Carbon and hydrogen are estimated in organic compounds?Liebig’s method
Which isotope of uranium capable of sustaining chain reactions?U-235
Which is natural source of gamma-rays?Radon gas
Which is the substance which can act both as an acid and a base?Amphoteric
Where is the Smog is likely to occur?Near the industrial areas
Which property of the elements is a whole number?Atomic number
What are the atoms of the elements which have same number of neutrons called?Isotones
What happens to the level of mercury in the barometer tube when it is taken down a coal mine?It rises
Which metal is extracted by electrolytic reaction method?Al (Aluminium)
Which is the basis of modern periodic table?Atomic number
By which can the location and energy of an electron in an atom be specified?Quantum numbers
Which is also called Stranger Gas?Xenon
Mixture of which pair of gases is the cause of occurrence of most of the explosions in mines?Methane and air
Rainwater collected after 30 to 40 minutes of raining is not suitable for drinking why?Because it is acidic
What is the poison of honey bee?Acidic
Which inorganic precipitate acts as semipermeable membrane?Copper ferrocyonide
In which biological process sugar is oxidised to release energy?Respiration
To prepare a standard solution of a substance, what is generally used?Measuring flask
How does Transfer of heat energy from the sun to the moon take place?By radiation only
Which is an active component of oil of clove?Eugenol
In methane molecule how are the four hydrogen atoms arranged?As tetrahedral
What are Rubies and Sapphires chemically known as?Aluminium oxide
Which pair of metals constitutes the lightest metal and the heaviest metal, respectively?Lithium and osmium
Energy transferred to a person through gamma rays is measured in by which unit?Roentgens
Which element has the lowest electron affinity?Argon
What does the emission of ß-particle?Increases the atomic number by one
A fruity smell is obtained by the reaction of ethanol with which compound?CH3COOH
Which gas do not considered as polluting agent of air?CO2
Which compound caused tragedy of Bhopal in 1984?Methyl isocynate
Which compound is used as an antichlor?Na2S2O3
Which chemical used as a ‘fixer’ in photography?Sodium thiosulphate
Which metal has the highest density?Platinum
In human body, into which does the pancreas secretes its enzymes?Duodenum
Which compound is used in anti-malarial drug?Chloroquin
What does Soda water contain?Carbon dioxide
Which processe of weathering belongs to both mechanical and chemical weathering?Crystallization
What is the main constituent of vinegar?Acetic acid
Which compound is used for writing on glass?Hydrogen fluoride
Which compound is commonly used as antifreeze in automobile radiators?Glycerol
When water vapours are passed over aluminium carbide, what do we get?Methane
What are soaps?Sodium or potassium salts of heavier fatty acids
Which material is suitable for water purification?Zeolites
Which chemical is used in foam fire extinguishers?Aluminium sulphate
Which element is with the highest electrical conductivity?Silver
During electrolysis, which the species are discharged at cathode?Cations
Non-stick cooking utensils are coated with which metal?Teflon
Which represents a process of chemical weathering?Hydration and Hydrolysis
How can Permanent hardness of water be removed?By adding washing soda
Which nuclear particles responsible for holding all nucleons together?Mesons
What is generally present in tonics?Ethanol
Which component of the atmosphere has increased during the last 200 years?Carbon dioxide
What does mixture of CS2 and H2S on passing over heated copper give?Methane
Of which metal were the tools and weapons of Harappan civilisation?Copper, tin and bronze
Which is associated with the formation of brown air in traffic congested cities?Nitrogen oxide
Balloons are filled with which gas?Helium
Which are the The best and the poorest conductors of heat respectively?Silver (Ag), and lead (Pb)
Which metal is not attacked by the environment?Gold
Which colloidal solution is used in photography?Colloidal silver bromite
A temperature difference of 25°C is equivalent to a temperature difference of howmany F?45° F
A deuterium nucleus consists of which particles?One proton and one neutron
How many moles are there in 140 g of Si (atomic mass of silicon is 28)?5
Which is used in storage batteries?Lead
An element X forms an oxide X03.6
Which polymeric material is used for making bullet proof jacket?KEVLAR
Which is the main ingredient in cement?Lime stone
Which elementis produced when concentrated cinnabar is roasted in the excess of air?Hg
Which nuclides having the same number of neutrons but different number of protons or mass number?Isotones
Which compound is known as white vitriol?ZnSO4 .7H2O
Which environment leads to the occurrence of acid rain?Sulphur dioxide
Which type of the fruit formed without fertilisation?Parthenocarpy
In vulcanisation, with which the natural rubber is heated?Sulphur
Which algae is used as biofertilizer in the production of crop paddy?Blue green algae
When lake starts freezing the formation of the ice will start first at which point?Top
Which unicellular algae are used as source of oxygen in space research?Chlorella
Which is used as a filler in rubber tyres?Carbon black
Alcoholic fermentation is brought about the action of which thing?Yeast
By whom was the principle of ‘Black hole’ enunciated?S. Chandrashekhar
Which gas has maximum colorific value?Oil gas
A molecule of glucose on complete oxidation yields howmany ATP molecules in case of aerobic respiration?36
A lighted candle gets extinguished when covered with a tumbler. Why?Because of inadequate supply of air
In anaerobic respiration, what is the net gain of ATP per glucose molecule oxidised?2
The elements of group VA are generally known as which name?Pnicogens
Which pairs of rays is electromagnetic in nature?x-rays and gamma rays
Which gase changes lime water in milky colour?Carbon dioxide
"Mercury thermometers can be used to measure temperature up to how many °C?360°C
"What does Gobar gas contains mainly?Methane
Which are the important raw materials required in cement industry?Limestone and clay
What is not the cause of low conductivity of electrolyte?Ionisation of salt
Cooking gas is a mixture of which gases?Butane and propane
Which acid is produced when milk gets sour?Lactic acid
Which are the most commonly used chemicals in the artificial rain making or cloud seeding?Silver Iodide (Agl)
What happens, When water is heated from 0°C to 10°C the volume of water?First decreases then increases
Which compound does not give a positive test in Lassaigne’s test for nitrogen?Hydrazinc
Litmus paper used in laboratary from which obtained?Lichen
Which acid is used in synthetic lemonade?Citric acid
With rise of boiling point of a water, what will be the latent heat of steam?Decreases
If we sprinkle common salt on an earthworm, why does it die?Due to osmotic shock
What do the contact of two air masses differing sharply in humidity originate?Temperate cyclones
Which of the toxic heavy metals is found in modern tannery industries?Chromium
Why is tetracycline is used?As anti-plague drug
Which contain high content of lead?High octane fuel
Where is Pakistan’s nuclear power plant located?Kahuta
Denatured spirit is a mixture of ethyl alcohol, methyl alcohol and which other thing?Pyridine
During rainy seasons why do doors made up of wood swell up?Due to imbibition
Of the floating iceberg in the sea, how much is the portion remaining above the sea level?1/10th
By which enzyme is Urea converted into ammonia and carbon dioxide?Urease
Which colour of heat radiation represents the highest temperature?White
Which fertilizer has more nitrogen content?Urea
Trees in tropical deciduous forest shed their leaves in which season?Dry season
Food wrapped in newspaper is likely to get contaminated with which desease?Lead
If a U-238 nucleus splits into two identical parts, how will the two nuclei be so produced?Stable
Which metal is used for making boats because it does not corrode by seawater?Titanium
Which is a strong smelling agent added to LPG cylinder to help in the detection of gas leakage?Thioethanol
Which is a metamorphic rock?Slate
What is the best conductor of electricity?Salt water
Which was the The first atomic power reactor in India?Apsara
Which of the element of group 17 is radioactive?Astatine
Which has the least penetrating power?Alpha particles
Which land mark in medical history was the first to take place?Plastic surgery
Most of the explosions in mines occur due to the mixing of things?Oxygen with acetylene
Which metal causes Itai-itai disease?Cadmium
Glass is made of the mixture of which things?Sand and silicates
Which is the chief characteristic of wet and dry tropics?Constant heating
What is a graph is plotted taking °C along the Y-axis and of K along the X- axis?Straight line
Acetyl salicylic acid is commonly used as which medicine?A pain killer
The electron emitted in beta radiation originates from where?Inner orbits of atoms
Which chemically inactive gas present in the atmosphere?Argon
By whom was the absolute value of charge on electron determined?R.A. Millikan
From which the cathode ray particles originate in a discharge tube?Cathode
Which element has two electrons in the K-shell only?Helium
Major part of CO2 is transported to respiratory surface in form of which ion?HCO3 ion
Which type of isomerism is shown by diethyl ether and methyl propyl ether?Metamerism
Which allotrope of the carbon is used in cutting and drilling?Diamond
In certain amino acids, which elements is found in addition to carbon, hydrogen, nitrogen and oxygen?Sulphur
Which substance coated on plastic tape?Iron oxide
Which is the cloud that is dark-grey or black, found at very low height and brings the real rain?Nimbostratus
X210 has half life of 5 day. What is the time taken for seven-eights of sample of X210 to decay?15 days
A gas is found to have the formula (CO)n. Its vapour density is 70. What must the value of n be?5
What are Alpha rays emitted from a radioactive substance?Helium nuclear
Which is used in beauty parlours for’ hair setting?Sulphur
Which gas is most predominant in the Sun?Hydrogen
Which is the lightest gas?Hydrogen
When Metal carbonate reacts with dilute acids, what does it forms?CO2
The element common to all the acids is known as which name?Hydrogen
Which is the gas usually filled in the electric bulb?Nitrogen
To whom the credit for the discovery of transuranic element goes?Seaborg
Sodium carbonate crystals lose water molecules. What is this property called?Efflorescence
Which gase is essential for photosynthesis process?CO2
Acetylene is used as an anaesthetic under which name?Narcylene
Which is responsible for red rot of sugarcane?C o l l e c t o r i c h u m falcatum
What is the major ingredient of leather?Collagen
Which particle has similar mass to that of the electron?Positron
Which acid used to remove inkspots?Oxalic acid
For pasteurisation of milk by Flash method, at which temperature is milk heated?100°C
Which chemical is used for preserving fruit juices?Sodium benzoate
Which metal is found in ‘plaster of paris’?Calcium
In which year did Mahatma Gandhi return to India, leaving South Africa for ever?1914
Which radiation emitted from the sun has highest wavelength?Micro waves
Aluminium surface are often ‘anodized’. This means deposition of a layer of which oxide?Zinc oxide
Which Scale is used for recording weather condition?Barometer
Which chemically inactive gas present in atmosphere?Argon
Which synthetic fibre is known as artificial silk?Rayon
All acids contain which element?Hydrogen
Which predominantly acts as the agent of chemical erosion of soil?Underground water
Formation of pot holes in river beds is an example of thing?Corrosion
Which type of glass can cut off ultraviolet rays?Crooked glass
Which is called philosopher’s wool?Zinc oxide
When ore is heated generally in absence of air then what is process called?Calcination
Which pair does not contain a coinage metal?Zinc and Gold
What is the most soluble in water?Sugar
From where can renewable energy be obtained?Biomass
When ice melts into water, which type of change occurs in entropy?Increases
The pH of water at 25°C is 7.Remains same
Which is produced during allergic reactions?Histamine
What is the mixture of carbon monoxide and hydrogen called?Water gas
In the leaf of tobacco what is found?Nicotin
In which Molecule the distance between two adjacent carbon atoms is longest?Ethane
Which charcoal is used to deeolourise raw sugar?Wood charcoal
Which metal used to pollute the air of a big city?Lead
Which form an irreversible complex With haemoglobin of blood?Carbon monoxide
Regarding the atom of a chemical element, magnetic quantum number refers?Orientation
When an ebonite rod is rubbed with fur, which charge acquired by the fur?Positive
What is development of fruit without fertilization called?Parthenocarpy
Which charcoal forms of carbon is used in sugar industry?Animal charcoal
One molecule of hemoglobin can carry how many atom of oxygen?8
Which is a source of methane emission into the atmosphere?Wetland
Which is not an important condition for growth of coral?Wave-free salt water
Which is the element common to all acids?Hydrogen
What is the function of Leghaemoglobin in nitrogen fixation?Absorption of oxygen
Which is the most important ore of aluminium?Bauxite
Which chemical can be used is anticoagulent?Sodium citrate
Carbon monoxide has how much greater affinity for haemoglobin as compared to oxygen?200 times
In which country does State funding of elections take place?Germany and Austria
Starch iodide paper is used to test for the presence of which agent?Oxidising agent
The powers of the Election Commission are given in which Article of the Constitution?324
Which Element present in largest amount in human body?Oxygen
What is formed by dissolution of base or acid in water?Exothermic
Which processe is used to remove reducible oxides from the metal?Poling
Mercury is transported in metal containers made of which metal?Iron
What does lattitude place indicate?Temperature
By whom was Cholera bacillus discovered?Robert Koch
Stainless steel is an alloy of which metals?Iron, chromium and nickel
What is the oxidation number and covalency-of sulphur in S8?0, 2
What is the substance which decreases the rate of a chemical reaction?Poison
Dwarfness can be controlled by treating the plant with which acid?Gibberellic acid
Which are the Chemicals having profound effect on growth and development?Phyto hormones
Which is obtained, when H2S is passed through the solution of sodium zincate?ZnS
Fish die in water bodies polluted by sewage, why?Due to Reduction in oxygen
What is produced during the formation of photochemical smog?Nitrogen oxide
Which place has no Ashokan edicts?Pataliputra
Parthenocarpy fruit is obtained by which sprying phytohormone?Auxins
Which is a non-metal that remains liquid at room- temperature?Bromine
By which rular was the new element of ‘Gopuram’ encouraged in temples of South India?Cholas
Which colloidal solution is commonly used as germ killer?Colloidal sulphur
Which is an insectivorous plant?Pitcher plant
What number of essential amino acid is found in man?20
By which is the amount of light entering into the eye controlled?Iris
Which is the compound in that oxygen shows + 2 oxidation state?F2O
The heavier silicates named ‘Sima’ or silica + magnesium are most abundant in which layer?Crust
With which period do we associate the ‘microlith’ implements?Mesolithic
Insectivorous plant generally grow in soil which is deficient in which gas?Nitrogen
Which compound can not be used as nitrogenous fertilizer?HNO3
Which is a non-ferrous metal?Aluminium
DC current can be controlled by which component?Resistance
Sodium metal is kept under which liquid?Kerosene
Which naturally occurring element in the rice husk makes it termite resistant?Silicon
What is a powerful eye irritant present in smog?Sulphur dioxide
How is the relative permeability of a diamagnetic material?Less than unity
Which desert is famous for its deposits of nitrates?Atacama
What is Isomerism exhibeted by acetic acid and methyl formate?Functional group
Which is considered as a cell withing a cell?Golgi appartus
Which is a significant contributor to increased levels of atmospheric carbon dioxide?Deforestation
Who is responsible for the registration of voters?Election Commission
Which is used in welding industry?Acetylene
"Where was the world’s first oil-well drilled in the nineteenth century?Titusfills in Pennsylvania, U.S.A.
"Which was a novelty in Shah Jahan’s buildings?Makrana marble
Flux reacts with the impurities to form fusible material. which is known as which name?Slag
If the dew point is below freezing, it is referred to which point?Frost point
Which is printed on a commonly used fluorescent tube light?6500 k
In which organ carbohydrate is stored as glycogen?Liver
Which element does not show variable oxidation states?Zinc
Which type of coal represents the first stage of formation of coal?Peat
What is formula of plaster of paris?2CaSO4.H2O
What is the main constituent of natural gas?Methane
‘IC chips’ for computers are usually made of which metal?Silicon
What does Hydrogen fuel cell vehicles produce as “exhaust”?H2O
What is an example of Miscelles System here?Soap + Water
What is saliva in man?Alkaline
What is the main constituent of haemoglobin?Iron
Which was the first synthetic fibre made by man?Nylon
In the structure of planet Earth, below the mantle, the core is mainly made up of which?Iron
What is the best conductor of electricity a 0.1 M solution?Sulphuric acid
What is the chemical formula for water glass?Na2SiO3
Which of the following is used as a lubricant?Graphite
What is the function of heavy water in a nuclear reactor?Slow down the speed of neutrons
Uranium eventually decays into a stable isotope of element?Lead
Which is the metal used in storaoe batteries?Lead
Which type of soils have a marked capacity to retain water?Regur soil
What is laughing gas?Nitrous oxide
When sodium bicarbonate is heated, what is the product obtained?Na2CO3
If a liquid wets a solid surface, what is the angle of contact?Less than 90°
Which noble gas was discovered in chromosphere of the sun?Helium
What does Talc contains?Magnesium, silicon and oxygen
Which mixture is homogeneous?Methanol and water
Which form of phosphorus is used in safety matches?Red phosphorus
Which gas is used for refrigeration?Ammonia
By which an element is best characterized?By its atomic number
Which is the softest?Sodium
What is used in preparing match sticks?Red phosphorus
Which are the Actinides elements with atomic numbers?From 89 to 103
What is the most suitable unit for expressing nuclear radius?Fermi
What is the transfer of energy through matter from particle to particle?Conduction
Chlorine acts as a bleaching agent only in the presence of which thing?Moisture
Which pair of metals are supposed to constitute the internal core of the earth?Nickel and Iron
What does Nail polish remover contain?Acetone
Select the compound in which chlorine shows oxidation state + 7?HClO4
Which substance is used to retard the setting action of cement?CaSO.2HO
What is the composition of Nitrolim-a chemical fertilizer?Calcium carbide and nitrogen
What are species containing same number of electrons called?Isoelectronic
Rusting of iron is an example of which thing?Slow oxidation
What is the natural source of hydrocarbon?Biomass
Which is used as a fuel in Nuclear power stations in India?Thorium
Which gas is absorbed during photosynthesis?CO2
What is a mixture of potassium nitrate, powdered charcoal and sulphur called?Gun powder
Which is a major constituent of Biogas?Methane
Which ore contains both calcium and magnesium?Dolomite
Who proposed the Atomic principle of matter?Dalton
Which two basic forces are able to provide on attractive force between the two neutrons?Gravitational and Nuclear
When a bond is formed between two atoms, the energy so system will be–Decrease
Element having atomic number 29 is related to –D-Block
Which of the following particle being charged negatively?Electron
Cathode rays are–Stream of electrons
Which of the following element is most electronegative?Fluorine
Which of the following determines the chemical properties of an element?Number of electrons
The product equivalent weight and valiancy of an element is equal to–Atomic weight
Orientation of atomic orbital is controlled by –Magnetic Quantum number
Who is awarded by noble prize for the discovery is neutron?Chadwick
An Element Atomic number 17 and mass number 36, then number of neutrons present in it–19
Which of the following has maximum Mass?Neutron
Atoms having equal number of protons but different number of Neutrons are called –Isotopes
Atoms having same no of neutron but different no of electrons or protons are called –Isotones
Nucleotide have same atomic number are called:Isotopes
What is the value of Avogadro number?6.023 × 1023
Which of the following is not a nucleon?Positron
Chemical behavious of an element depends upon its–Number of electrons revolving around nucleus
Atomic nuclei are composed of–Protons and neutrons
The fundamental particles that composed on atom are–Proton, electron, Neutron
What are the fundamental elements of an atom?Electron, Proton, Neutron
Electronic configuration of Element Atomic number 20 is –2, 8, 8, 2
Who discovered the element Atomic number 106?Seaborg
Mark the compound which posses ionic, covalent and co–ordinate bond:NH4Cl
Property of Ammonia is –In its aqueous solution Red Litmus turns to Blue Litmus
Paper of old books turns to brownish color due to –Oxidation of cellulose
Which of the following is strongest oxidizing agent?Fluorine
Positive oxidation state of oxygen is possible only in–OF2
What is the oxidation number of Nickel in K4[Ni(CN)4]?Zero
If Mg Cl2 contains one Millions of Mg2+ Ions, then how many Chloride Ions are present in it?Two million
When Helium atom Loses electron, then it becomes–Positive Helium ion
The mass number of a nucleus is –sometimes more and sometimes equal to its atomic number
The weight of 6.023 × 1022 atoms of carbon is –1-2gram
Which of the following particle has the dual nature of particle wave?Electron
Mass number is the sum of –Protons and Neutrons
An alloy used in making heating elements for electric heating devices is –Nichrome
The use of Heat treatment of ore that includes smelting and roasting is termed as–Pyrometallurgy
Which of the following does not contains silver?German Silver
Aluminum is extracted from –Bauxite
The ore of Aluminum is –Bauxite
Brass contains –Copper and Zinc
Brass is made ofCopper and Zinc
Maximum permissible concentration of copper in drinking water in mg/L is –2
Brass gets discoloured in air due to the presence of which gas in air?Hydrogen sulphide (H2S)
Which type of Glass is used for making glass reinforced plastic?Fiber glass
Purification of copper is done by –E l e c t r o l y t i c decomposition
Non-Metal found in Liquid state is –Bromine
The phenomenon of ejection of electrons from the metal surface when a light of suitable frequency falls on it is called–Photoelectric effect
Acute Lead poisoning is also known as –Plumbism
Which of the following metal has least melting point?Mercury
Which of the following metal forms amalgam with other metals?Mercury
Amalgam is an alloy in which the base metal is–Mercury
What is Baeyer’s reagent?Alkaline Potassium Permanganate
Hygroscopic substances are those substance which ready absorb–Water Vapors
Rusting of Iron is –Due to oxidation
The rusting of iron metal in air needs both–Oxygen and Moisture
Which of the following is required for the rusting of iron?oxygen and water
Iron rusts quickly in –Sea water
The rusting of iron–Increases its weight
Which of the following is not a chemical change?Conversion of water into steam
If the bullets could not be removed from gunshot injury of a man, it may cause poisoning by–Lead
The ratio of pure gold in 18 carat gold is –0.75
The King of metal is –Gold
German Silver contains following Metals –Copper, Zinc, Nickel
Which of the following is not contained by the German Silver?Silver
Which metal is used to Galvanize iron?Zinc
To protect the iron from getting rusted, the coat of zinc is applied on it. This process is known as–Galvanization
Ultra purification of a Metal is done by–Zone Melting
Glass is a –Supper cooled Liquid
Which of the following contains high content of Lead?High octane fuel
Which of the following is not favourable to prevent iron from rusting?Annealing
Which of the following is responsible for extra strength of Pyrex glass?Borax
Which one of the following metals does not react with water to produce hydrogen?Cadmium
Which one of the following reacts with Fehling’s solution?HCHO
Sodium vapor Lamps glow with yellow Light. This is due to–Sublimation of sodium to emit yellow colour
The Element which does not occours in nature but can be formed, isRadium
Which of the following elements behave chemically both as metal and a non- metal?Boron
Which of the following metal has maximum electrical conductivity?Silver
Which of the following is most bad conductor?Lead
Bronze is an alloy of–Copper and Tin
Shock absorbers are usually mode of steel as it?Has Higher elasticity
Identify the metal which is non-toxic in nature–Gold
Which of the following metal is found in Free State in natureGold
Most important ore of Lead is–Galena
Which of the purest commercial form of Iron?Wrought Iron
Which of the following is purest form of Iron?Wrought Iron
Which one of the following is known as the brown coal?Lignite
Which one of the following is not a coal variety?Dolomite
The Iron ORE which contains 72% of Iron is –Magnetite
Which one of the following is an iron ore?Magnetite
Which one of the following Mineral does not contains oxygen?Cryolite
Which metal is protected by the layer of its own oxide?Aluminum
The ore only two metals that are Non–Silver in colour, they are–Copper and gold
Siderite is an ore of–Iron
Which of the following process is used in the extraction of iron from the Iron ore?Reduction
Which one of the following metals cannot be used as an electromagnet?Copper
Quartz is a type ofSilicon dioxide
Raw materials used in the manufacturing of glass are–Soda, Lime Stone Silica Sand ash
Ruby and sapphire are the oxides of – Aluminum
Which of the following is used in welding broken pieces of iron rails and parts of machine –Aluminum Powder
Which one of the following does not present in the Stainless Steel?Tungsten
The addition of Gypsum to Portland cement helps in–Preventing rapid settling of cement
Who discovered cement?Joseph Aspdin
Air pollution by “Fly Ash” is caused by–Cement industry
Cement is formed by strongly heating a Mixture of –Lime Stone and clay
Cement is a mixture of –Calcium Silicate and calcium aluminates
Which one of the following Metals is used to Heat up the electric iron?Nichrome
Which of the following is strongest coagulant?Aluminum Chloride (Alcl3)
The Base used as an antacid is –Magnesium Hydroxide Mg(OH)2
Which of the following metal is found in Free State?Copper
Which one of the following is used in Pencils?Graphite
In Graphite layers are held together by–Vander wall forces
Which one among the following is Lubricant?Graphite
One carat of Diamond is equal to–200 mg
Which of the following are properties is generally found in non-metals?Brittleness
What is wood spirit?Methyl Alcohol
Fire-Fighting cloths are made from–Asbestos
The Gas Causes acid rain in an industrial area is–Sulphur dioxide
Acid rain in the environment is caused by the Higher concentration of –SO2 and NO2
Which one of the following is used to dissolve noble metals?Aqua regia
Aqua regia is a Mixture of the following in the ratio 1:3 by volume–Conc HNO3 and conc CHL
Sulphuric acid is –Dibasic
Fullerene is a newly discovered crystalline carbon allotrope, contains–60 C atoms
Catalytic Converters are Generally Made from –Transition Metals
The First Time atomic bomb was released at–Hiroshima
Hydrogen Bomb is based upon the Principle of–Uncontrolled Nuclear Fusion
Which type of reaction produces the most harmful radiation?Fission
How many countries explode the atom bomb before India?5
Chocolates nay Harmful to Health because they contains High quantity of –Lead
Gun Powder was discovered by–Roger beckon
Gun Powder is a Mixture of–Nitrate, Sulphur and Charcoal
Which of the following mixture cause the explosion of TNT (Trinitrotoluene)Ammonium Nitrate
Which of the following Isotope is used in the production of Nuclear Energy?U-235
High amount of energy is released in the explosion of atomic bomb is due to–Conversion of Mass into energy
Tritium is an Isotope of –Hydrogen
In India Nuclear Weapon was tested at –Pokhran
Nuclear Power Reactor act on the Principle of–Fission
The two elements which are used to absorb the neutrons in nuclear fission during chain reactionBoran and Cadmium
Fuel used in Nuclear reactor is –Uranium
Graphite is used as a… in nuclear reactors.Moderator
Heavy water used as a coolant in nuclear reactor. Heavy Water is:Water containing heavy Isotopes of Hydrogen atom
In nuclear reactor, Neutrons are slowdown by theModerator
Who discovered the natural radioactivity?Henri Becquerel
Radioactive decay of uranium resulted the formation of final product–Lead
Uranium eventually decays into a stable isotope of –Lead
In the treatment of skin disease the radio isotope used is–Radio Phosphorous
Radioactivity is Measured by –Giger – Muller counter
The most suitable unit to express the nuclear radius is –Fermi
Radioactive Noble Gas is–Rn
There is no change in radioactive element (Mass or change) during –Gamma emission
Radioactivity is the fission of –Nucleus
Quality of Petrol expressed in terms ofOctane number
In LPG cylinder under the High Pressure mainly mixture of Gases filled in Liquid form –Propane and Butane
Kitchen or Cooking Gas is a mixture of –Butane and Propane
PNG (Piped Natural Gas) is used for –Cooking
TEL (Tetra Ethyl Lead) is a –An anti knock Compound
Wax used for making candles is chemically a mixture of–Aliphatic Hydrocarbons
Petroleum is a Mixture of –Hydrocarbons
Glycol is added to aviation gasoline because itPrevents freezing of petrol
Water is not effective in extinguishing a fire caused by petrol because–Water and petrol are immiscible with each other and petrol which forms upper Layer continuous to burn.
Diesel oil is prefer for Heavy Motor Vehicles because it–It has more capacity and fuel save
The temperature of oxy–acetylene flame is around–32000C
Rayon is formed by –Cellulose
Polyethene is formed by –Ethylene
Glycogen, Cellulose and starch are the polymers of–Glucose
The process of Heating of Rubber with sulphur to increase it quality is known as –Vulcanization
Natural rubber is a polymer of–Isoprene
Afriline is a –Fiber
PVC is obtained by the polymerization of –Vinyl chloride
The gas that usually cause explosion in coal mines is–Methane (CH4)
Bakelite and Phenol are the polymers of–Formaldehyde
Silicon is a Polymer ofDialkyal dichloro silane
Which gas used as an anesthetic?Nitrous oxide
The drug which Lowers anxiety and provide Peace –Tranquilizer
The branch of medicine involving synthetic chemical compounds is–Allopathic
The pair of compounds used as anesthetic in medicine is –Nitrogen dioxide, chloroform
Fluid used commonly in making Bio-gas –Animal Wast
Gobargas mainly containsMethane
Main Constituent of air is–Nitrogen
Zinc Phosphide is commonly used as –Rodenticide
Oxides of sulphure present in atmosphere washed down by rain to cause–Lowering of PH of soil
Green House effect meansTrapping of solar energy due to carbon dioxide.
Depletion of ozone Layer is mainly due to –Chlorofluoro carbons
Which atmospheric gas absorbs ultraviolet rays?Ozone
Pasteurization is a process in which milk is Heated at–630C for 30 min
Combustion is a –Chemical Process
Chief pollution of smoke of cigarette is–Carbon monoxide and nicotine
Smoke of tobacco is Injurious to Health because it contains –Nicotine
Producer gas is Highly Poisonous due to the presence of –Carbon Monoxide
It is not advisable to sleep under the tree at night because trees release–Carbon dioxide
The calorie requirement of the body increases in winter as compared to summer because ore calories are necessary toSustain body temperature
Micro organism which monitor the air pollutionLichen
Substance used Highly as a food preservative –Sodium salts of benzoic acids
Super Sonic Jet causes pollution by thinning of–O3 Layer
Bhopal Gas Tragedy was caused by –Methyl Isocyanite
Freon is used as aCoolant
Coolant ‘Freon’ is–Dichloro Methane
Which gas is used for the artificial riping of Green Fruits?Ethylene
Aspirin is common name of–Acetylsalicylic acid
Chemical name of Gamma xene isBenzene Hexa Chloride
Main Gaseous pollutant of thermal power plants is–SO2
Acid rain destroy vegetation because it contains –Sulphuric acid
A hard fluid present in smog which causes irritation in eyes is–Peraxyacetyl Nitrate
Acid rain is caused due to pollution of atmosphere by–Oxides of Nitrogen and Sulphur
The inert gas used as beacon Light is –Neon
Hydrogen was discovered by –Cavendish
Paper is made by–Cellulose of plants
Litmus is obtained from –Lichen
Which gas is used as a disinfectant in drinking water?Chlorine
Black Lung disease occours in people working in –Coal mines
Burning of candle is aExothermic reaction
In the Industrial production of vegetable ghee, the process involved is –Reduction
Gas used in the production of vegetable ghee is–Hydrogen
Cooking oil is converted into vegetable ghee by the process of–Hydrogenation
"In a reaction of type A + B → C + D one could ensure it, to be a First order reaction by–Increasing the concentration of a Product
Bagasse is used in the manufacturing of–Paper
Size of suspended particles lies between–10–5 – 10–7 cm
An Emulsion is a colloid of a –Liquid in a Liquid
Milk is aEmulsion
A colloidal system in which a Liquid is dispersed in a Liquid is called –Emulsion
A gas thermometer is more sensitive than a Liquid thermometer because a gasExpands more than a Liquid
Nitrogen has Higher ionization energy than oxygen because in Nitrogen there is–Half Filled Stable configuration in 2p orb
In deep see diving, divers use a mixture of gases consisting of oxygen and–Nitrogen (N)
The Gas dissolved in water that makes it basic is?Ammonia
Which metal is extracted from Sea water?Magnesium
The Physical method Commonly used to purify Sea water is–Distillation
Sea water can be purified by the Process of– Distillation
Soda water containsCO2
A Liquid is said to be boiled when its–Vapor pressure is equal to the surrounding pressure
Hygroscopic objects are those which instantly absorb–Water vapors
Quantity (Amount) of water vapors present in atmosphere is measured in –in the form of Humidity]
Spirit in Contact with body gives cool sensation because it isHighly volatile
Cloud is a colloidal of –Water drop in a dispersion medium of air
Light Scattering take place in –Colloidal solution
What is the fourth State of Matter?Plasma
Muddy water is treated with alum in Purification process–Coagulation
Alum is used for the water treatment in the process named–Coagulation
Suspended colloidal particles in water can be removed by the process of –Coagulation
Alum stops bleeding in a minor cut because of–Coagulation
What is the meaning of Reader in waste water treatment process?Container
Iodine can be separated from a mixture of Iodine and potassium chloride bySublimation
Water does not evaporate, if [StenographerHumidity
The amount of chlorine available in water after disinfection called asResidual chlorine
What will be the form of Nitrogen in sewage water is completely oxidized?Nitrate
When water itself combines chemically with some element or mineral it is called–Hydration
Heavy water means–Water containing Maximum density
What is the chemical composition of Heavy Water?D2O
Heating of ore in the absence of air below its melting point is calledCalcinations
Water can be separated from the mixture of water-Alcohol by the process–Distillation
Iron and Manganese are removed by the process of–Filtration
What changes will happen to a bowl of ice and water kept at exactly zero degree Celsius?No change will happen
The Process of ozonation in water treatment is known asDisinfection
Charcoal is used in water treatment as a/an–Adsorbent
Detergents used for cleaning cloths and utensils containsSulphonates
Detergent cleans the surface on the principle of –Surface tension
Aqueous Hydrolysis of sucrose formed –Glucose and Fructose
Glucose is a type of –Hexose Sugar
Dry ice is a solid type of –Carbon dioxide
Water gas is a Mixture of–Carbon monoxide and Hydrogen
Enzyme which coagulate the milk into curd–Renin
Process of Removal of calcium and Magnesium is known as –Water softening
Phenolics as Pollutant can be removed from waste water by use of–Ion exchange method
Highly polluting industries comes under the category of–Red
When Hydrogen combusts in air, then formed–Water (H20)
Gas used as a fire extinguisher isCarbon dioxide (CO2)
Chemically Lime water is –Calcium Hydroxide
Which gas is used for converting vegetable oils into saturated fats –H2 (Hydrogen)
Heat transfer Horizontally with in atmosphere is called–Advection
Chemical name of bleaching powder isCalcium Hypochlorite
Lime water becomes milky when exposed to air due to the presence of –Carbon dioxide
Venturimeter is used to measure the–Rate of flow of Liquid
The two specific Heats of gases are related by–CP–CV = R/J
What is the Main Source of Manufacturing of Nitrogenous Fertilizer?Ammonia
What is the average value of salt present in sea water?0.035
Percentage of Lead in Lead Pencils is –0
The material used in the manufacture of Lead pencil is–Graphite
What happens during the charging of Lead operated battery?Consumption of sulphuric acid
Plaster of Paris is made by the Partial dehydration of –Gypsum Salt
Non-metal founds in Liquid State –Bromein
Isomer of ethyl alcohol is –Die Methyl ether
Froth Flotation process is used for the metallurgy of – Sulphide ore
Which silver salt is used for making film of photography?Silver Bromide (Ag Br)
The chemical name of Hypo commonly used in Photography is–sodium Thiosulphate
Conversion of Heat into electric energy is achieved by using –Thermocouple
Hydrochloric acid is also known asMuriatic acid
Disadvantage of using DDT as pesticide is –Not easily degradable in nature
pH-scale ranges from –0–14
The maximum density of water is at–40C
In a rechargeable cell what kind of energy is stored within the cell?Chemical energy
The acid used in the Lead storage cell is –Sulphuric acid
Which acid is stored in batteries?Sulphuric acid
The mercury and sodium street Lamps Light up become of–Atomic emission
What is asbestos?Magnesium silicate
Chemically ‘Philosopher wood’ is a–Zinc oxide (zno)
Chemical Name of common salt is–Sodium chloride
Sodium chloride or Table salt occours in nature as the mineralHalite
Sodium carbonate commonly known as–Washing soda
Chemical formula of washing soda is–Na2Co3 10H2O
Commercial name of sodium bicarbonate is –Baking Soda
Chemical name of baking soda is–Sodium Bicarbonate
Chile saltpeter is the common name of–Sodium Nitrate (NaNo3)
The process of conversion of sugar in to Alcohol is known as–Fermentation
Vinegar is the chemical name of –Acetic acid
Vinegar formed by the fermentation of cane sugar contains–Acetic acid
Electrolysis of copper sulphate solution with copper electrodes gives–Copper at cathode and oxygen at anode
Tip of match stick contains –Red phosphorous
Green colour seen in firework display is due to the chloride salt ofBarium
The acid which fails to Liberate carbon dioxide from Sodium carbonate is –Carbonic acid
Mortar is a mixture of water, sand –Slaked Lime
Most commonly bleaching agent is –Chlorine
Helium gas is filled in the balloon instead of Hydrogen because its–Non-Combustible
Why Helium gas used in balloons?Its Lighter than air
Which gas is filled in balloons?Helium
The main cause of air pollution in big cities isSuspended particle
The word ‘Brown air’ is used for –Photochemical Smoke
Which affected the ‘Taj Mahal’?Which affected the ‘Taj Mahal’?
Hydrogen sulphide is aColourless gas with rotten egg smell
What is Peroxyl?Macro Pollutant
Burning Pyrites ore gives outSulphur dioxide gas
Chloroform can be used as – Anaesthtic
Sour taste of coca cola is due to –Phosphoric acid
Element with Highest Ionization energy is–helium
White Phosphorous is place under theCold water
Commonly sodium is kept under the– Kerosene oil
What happen when a drop of Glycerol is added to KMno4 spread on paper?The paper ignites
By Product obtained by soap industry is –Glycero
The process involved in the making of soap is–Sponification
The antiseptic compound present in Dettol is –Enloroxylenol
Main constituent of Liquid Bleach isSodium Hypochlorite
Caustic Soda is –Deliquescent
Who was the first to explain hydrogen spectrum?Neils Bohr
Dry powder fire extinguisher contains – Sand and sodium bicarbonate
Carbon dioxide is a –dehydrated agent
The most abundant Nobel gas in the atmosphere isArgon
The most abundant element on the earth isOxygen