Friday, April 21, 2017


1Gun Powder is a Mixture of-Nitrate, Sulphur and Charcoal
2Which of the following mixture cause the explosion of TNT (Trinitrotoluene)Ammonium Nitrate
3Which of the following Isotope is used in the production of Nuclear Energy?U-235
4High amount of energy is released in the explosion of atomic bomb is due to-Conversion of Mass into energy
5Tritium is an Isotope of -Hydrogen
6In India Nuclear Weapon was tested at -Pokhran
7Nuclear Power Reactor act on the Principle of-Fission
8The two elements which are used to absorb the neutrons in nuclear fission during chain reactionBoran and Cadmium
9Fuel used in Nuclear reactor is -Uranium
10Graphite is used as a............ in nuclear reactors.Moderator
11Heavy water used as a coolant in nuclear reactor. Heavy Water is: 65292Water containing heavy Isotopes of Hydrogen atom
12In nuclear reactor, Neutrons are slowdown by theModerator
13Who discovered the natural radioactivity?Henri Becquerel
14Radioactive decay of uranium resulted the formation of final product-Lead
15Uranium eventually decays into a stable isotope of -Lead
16In the treatment of skin disease the radio isotope used is-Radio Phosphorous
17Radioactivity is Measured by -Giger - Muller counter
18The most suitable unit to express the nuclear radius is -Fermi
19Radioactive Noble Gas is-Rn
20There is no change in radioactive element (Mass or change) during -Gamma emission
21Radioactivity is the fission of -Nucleus
22Quality of Petrol expressed in terms ofOctane number
23In LPG cylinder under the High Pressure mainly mixture of Gases filled in Liquid form -72 0Propane and Butane
24Kitchen or Cooking Gas is a mixture of -Butane and Propane
25PNG (Piped Natural Gas) is used for -Cooking
26TEL (Tetra Ethyl Lead) is a -An anti knock Compound
27Wax used for making candles is chemically a mixture of-Aliphatic Hydrocarbons
28Petroleum is a Mixture of -Hydrocarbons
29Glycol is added to aviation gasoline because itPrevents freezing of petrol
30Water 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.
31Diesel oil is prefer for Heavy Motor Vehicles because it-It has more capacity and fuel save
32The temperature of oxy-acetylene flame is around-32000C
33Rayon is formed by -Cellulose
34Polyethene is formed by -Ethylene
35Glycogen, Cellulose and starch are the polymers of-Glucose
36The process of Heating of Rubber with sulphur to increase it quality is known as -Vulcanization
37Natural rubber is a polymer of-Isoprene
38Afriline is a -Fiber
39PVC is obtained by the polymerization of -Vinyl chloride
40The gas that usually cause explosion in coal mines is-Methane (CH4)
41Bakelite and Phenol are the polymers of-Formaldehyde
42Silicon is a Polymer ofDialkyal dichloro silane
43Which gas used as an anesthetic?Nitrous oxide
44The drug which Lowers anxiety and provide Peace -Tranquilizer
45The branch of medicine involving synthetic chemical compounds is-Allopathic
46The pair of compounds used as anesthetic in medicine is -Nitrogen dioxide, chloroform
47Fluid used commonly in making Bio-gas -Animal Wast
48Gobargas mainly containsMethane
49Main Constituent of air is-Nitrogen
50Zinc Phosphide is commonly used as -Rodenticide


1Shock absorbers are usually mode of steel as it?Has Higher elasticity
2Identify the metal which is non-toxic in nature-Gold
3Which of the following metal is found in Free State in natureGold
4Most important ore of Lead is-Galena
5Which of the purest commercial form of Iron?Wrought Iron
6Which of the following is purest form of Iron?Wrought Iron
7Which one of the following is known as the brown coal?Lignite
8Which one of the following is not a coal variety?Dolomite
9The Iron ORE which contains 72% of Iron is -Magnetite
10Which one of the following is an iron ore?Magnetite
11Which one of the following Mineral does not contains oxygen?Cryolite
12Which metal is protected by the layer of its own oxide?Aluminum
13The ore only two metals that are Non-Silver in colour, they are-Copper and gold
14Siderite is an ore of-Iron
15Which of the following process is used in the extraction of iron from the Iron ore? 72 0Reduction
16Which one of the following metals cannot be used as an electromagnet?Copper
17Quartz is a type ofSilicon dioxide
18Raw materials used in the manufacturing of glass are-Soda, Lime Stone Silica Sand ash
19Ruby and sapphire are the oxides of - Aluminum 
20Which of the following is used in welding broken pieces of iron rails and parts of machine -Aluminum Powder
21Which one of the following does not present in the Stainless Steel?Tungsten
22The addition of Gypsum to Portland cement helps in-Preventing rapid settling of cement
23Who discovered cement?Joseph Aspdin
24Air pollution by "Fly Ash" is caused by-Cement industry
25Cement is formed by strongly heating a Mixture of -Lime Stone and clay
26Cement is a mixture of -Calcium Silicate and calcium aluminates
27Which one of the following Metals is used to Heat up the electric iron?Nichrome
28Which of the following is strongest coagulant?Aluminum Chloride (Alcl3)
29The Base used as an antacid is -Magnesium Hydroxide Mg(OH)2
30Which of the following metal is found in Free State?Copper
31Which one of the following is used in Pencils?Graphite
32In Graphite layers are held together by-Vander wall forces
33Which one among the following is Lubricant?Graphite
34One carat of Diamond is equal to-200 mg
35Which of the following are properties is generally found in non-metals?Brittleness
36What is wood spirit?Methyl Alcohol
37Fire-Fighting cloths are made from-Asbestos
38The Gas Causes acid rain in an industrial area is-Sulphur dioxide
39Acid rain in the environment is caused by the Higher concentration of -SO2 and NO2
40Which one of the following is used to dissolve noble metals?Aqua regia
41Aqua regia is a Mixture of the following in the ratio 1:3 by volume-0 65292Conc HNO3 and conc CHL
42Sulphuric acid is -Dibasic
43Fullerene is a newly discovered crystalline carbon allotrope, contains-60 C atoms
44Catalytic Converters are Generally Made from -Transition Metals
45The First Time atomic bomb was released at-Hiroshima
46Hydrogen Bomb is based upon the Principle of-72Uncontrolled Nuclear Fusion
47Which type of reaction produces the most harmful radiation?Fission
48How many countries explode the atom bomb before India?5
49Chocolates nay Harmful to Health because they contains High quantity of -Lead
50Gun Powder was discovered by-Roger beckon


1When Helium atom Loses electron, then it becomes-Positive Helium ion
2The mass number of a nucleus is -72 0sometimes more and sometimes equal to its atomic number
3The weight of 6.023 × 1022 atoms of carbon is -1-2gram
4Which of the following particle has the dual nature of particle wave?Electron
5Mass number is the sum of -Protons and Neutrons
6An alloy used in making heating elements for electric heating devices is -Nichrome
7The use of Heat treatment of ore that includes smelting and roasting is termed as-Pyrometallurgy
8Which of the following does not contains silver?German Silver
9Aluminum is extracted from -Bauxite
10The ore of Aluminum is -Bauxite
11Brass contains -Copper and Zinc
12Brass is made ofCopper and Zinc
13Maximum permissible concentration of copper in drinking water in mg/L is -2
14Brass gets discoloured in air due to the presence of which gas in air?Hydrogen sulphide (H2S)
15Which type of Glass is used for making glass reinforced plastic?Fiber glass
16Purification of copper is done by -E l e c t r o l y t i c decomposition
17Non-Metal found in Liquid state is -Bromine
18The phenomenon of ejection of electrons from the metal surface when a light of suitable frequency falls on it is called-Photoelectric effect
19Acute Lead poisoning is also known as -Plumbism
20Which of the following metal has least melting point?Mercury
21Which of the following metal forms amalgam with other metals?Mercury
22Amalgam is an alloy in which the base metal is-Mercury
23What is Baeyer's reagent?Alkaline Potassium Permanganate
24Hygroscopic substances are those substance which ready absorb-Water Vapors
25Rusting of Iron is -Due to oxidation
26The rusting of iron metal in air needs both-Oxygen and Moisture
27Which of the following is required for the rusting of iron?oxygen and water
28Iron rusts quickly in -Sea water
29The rusting of iron-Increases its weight
30Which of the following is not a chemical change?Conversion of water into steam
31If the bullets could not be removed from gunshot injury of a man, it may cause poisoning by- 0 65292Lead
32The ratio of pure gold in 18 carat gold is -75%
33The King of metal is -Gold
34German Silver contains following Metals -Copper, Zinc, Nickel
35Which of the following is not contained by the German Silver?Silver
36Which metal is used to Galvanize iron?Zinc
37To protect the iron from getting rusted, the coat of zinc is applied on it. This process is known as-72Galvanization
38Ultra purification of a Metal is done by-Zone Melting
39Glass is a -Supper cooled Liquid
40Which of the following contains high content of Lead?High octane fuel
41Which of the following is not favourable to prevent iron from rusting?Annealing
42Which of the following is responsible for extra strength of Pyrex glass?Borax
43Which one of the following metals does not react with water to produce hydrogen?Cadmium
44Which one of the following reacts with Fehling's solution?HCHO
45Sodium vapor Lamps glow with yellow Light. This is due to-Sublimation of sodium to emit yellow colour
46The Element which does not occours in nature but can be formed, isRadium
47Which of the following elements behave chemically both as metal and a non-metal?Boron
48Which of the following metal has maximum electrical conductivity?Silver
49Which of the following is most bad conductor?65292Lead
50Bronze is an alloy of-Copper and Tin


1Which is the softest?Sodium
2What is used in preparing match sticks?Red phosphorus
3Which are the Actinides elements with atomic numbers?From 89 to 103
4What is the most suitable unit for expressing nuclear radius?Fermi
5What is the transfer of energy through matter from particle to particle?Conduction
6Chlorine acts as a bleaching agent only in the presence of which thing?Moisture
7Which pair of metals are supposed to constitute the internal core of the earth?Nickel and Iron
8What does Nail polish remover contain?Acetone
9Select the compound in which chlorine shows oxidation state + 7?HClO4
10Which substance is used to retard the setting action of cement?CaSO.2HO
11What is the composition of Nitrolim-a chemical fertilizer?Calcium carbide and nitrogen
12What are species containing same number of electrons called?Isoelectronic
13Rusting of iron is an example of which thing?Slow oxidation
14What is the natural source of hydrocarbon?Biomass
15Which is used as a fuel in Nuclear power stations in India?Thorium
16Which gas is absorbed during photosynthesis?CO2
17What is a mixture of potassium nitrate, powdered charcoal and sulphur called?Gun powder
18Which is a major constituent of Biogas?Methane
19Which ore contains both calcium and magnesium?Dolomite
20Who proposed the Atomic principle of matter?Dalton
21Which two basic forces are able to provide on attractive force between the two neutrons? 0 65292Gravitational and Nuclear
22When a bond is formed between two atoms, the energy so system will be-Decrease
23Element having atomic number 29 is related to -D-Block
24Which of the following particle being charged negatively?Electron
25Cathode rays are-Stream of electrons
26Which of the following element is most electronegative?Fluorine
27Which of the following determines the chemical properties of an element?Number of electrons
28The product equivalent weight and valiancy of an element is equal to-Atomic weight
29Orientation of atomic orbital is controlled by -Magnetic Quantum number
30Who is awarded by noble prize for the discovery is neutron?Chadwick
31An Element Atomic number 17 and mass number 36, then number of neutrons present in it-19
32Which of the following has maximum Mass?Neutron
33Atoms having equal number of protons but different number of Neutrons are called -Isotopes
34Atoms having same no of neutron but different no of electrons or protons are called -Isotones
35Nucleotide have same atomic number are called:Isotopes
36What is the value of Avogadro number?6.023 × 1023
37Which of the following is not a nucleon?Positron
38Chemical behavious of an element depends upon its-Number of electrons revolving around nucleus
39Atomic nuclei are composed of-Protons and neutrons
40The fundamental particles that composed on atom are-Proton, electron, Neutron
41What are the fundamental elements of an atom?Electron, Proton, Neutron
42Electronic configuration of Element Atomic number 20 is -2, 8, 8, 2
43Who discovered the element Atomic number 106?Seaborg
44Mark the compound which posses ionic, covalent and co-ordinate bond:NH4Cl
45Property of Ammonia is - 65292In its aqueous solution Red Litmus turns to Blue Litmus
46Paper of old books turns to brownish color due to -Oxidation of cellulose
47Which of the following is strongest oxidizing agent?Fluorine
48Positive oxidation state of oxygen is possible only in-OF2
49What is the oxidation number of Nickel in K4[Ni(CN)4]?Zero
50If Mg Cl2 contains one Millions of Mg2+ Ions, then how many Chloride Ions are present in it?Two million


1Which is the compound in that oxygen shows + 2 oxidation state?F2O
2The heavier silicates named 'Sima' or silica + magnesium are most abundant in which layer? 65292Crust
3With which period do we associate the 'microlith' implements?Mesolithic
4Insectivorous plant generally grow in soil which is deficient in which gas?Nitrogen
5Which compound can not be used as nitrogenous fertilizer?HNO3
6Which is a non-ferrous metal?Aluminium
7DC current can be controlled by which component?Resistance
8Sodium metal is kept under which liquid?Kerosene
9Which naturally occurring element in the rice husk makes it termite resistant?Silicon
10What is a powerful eye irritant present in smog?Sulphur dioxide
11How is the relative permeability of a diamagnetic material?Less than unity
12Which desert is famous for its deposits of nitrates?Atacama
13What is Isomerism exhibeted by acetic acid and methyl formate?Functional group
14Which is considered as a cell withing a cell?Golgi appartus
15Which is a significant contributor to increased levels of atmospheric carbon dioxide?72 0Deforestation
16Who is responsible for the registration of voters?Election Commission
17Which is used in welding industry?Acetylene
18Where was the world's first oil-well drilled in the nineteenth century?Titusfills in Pennsylvania, U.S.A.
19Which was a novelty in Shah Jahan's buildings?Makrana marble
20Flux reacts with the impurities to form fusible material. which is known as which name?Slag
21If the dew point is below freezing, it is referred to which point?Frost point
22Which is printed on a commonly used fluorescent tube light?6500 k
23In which organ carbohydrate is stored as glycogen?Liver
24Which element does not show variable oxidation states?Zinc
25Which type of coal represents the first stage of formation of coal?Peat
26What is formula of plaster of paris?2CaSO4.H2O
27What is the main constituent of natural gas?Methane
28'IC chips' for computers are usually made of which metal?Silicon
29What does Hydrogen fuel cell vehicles produce as "exhaust"?H2O
30What is an example of Miscelles System here?Soap + Water
31What is saliva in man?Alkaline
32What is the main constituent of haemoglobin?Iron
33Which was the first synthetic fibre made by man?Nylon
34In the structure of planet Earth, below the mantle, the core is mainly made up of which? 65292Iron
35What is the best conductor of electricity a 0.1 M solution?Sulphuric acid
36What is the chemical formula for water glass?Na2SiO3
37Which of the following is used as a lubricant?Graphite
38What is the function of heavy water in a nuclear reactor?Slow down the speed of neutrons
39Uranium eventually decays into a stable isotope of element?Lead
40Which is the metal used in storaoe batteries?Lead
41Which type of soils have a marked capacity to retain water?Regur soil
42What is laughing gas?Nitrous oxide
43When sodium bicarbonate is heated, what is the product obtained?Na2CO3
44If a liquid wets a solid surface, what is the angle of contact?Less than 90°
45Which noble gas was discovered in chromosphere of the sun?Helium
46What does Talc contains? 0Magnesium, silicon and oxygen
47Which mixture is homogeneous?Methanol and water
48Which form of phosphorus is used in safety matches?Red phosphorus
49Which gas is used for refrigeration?Ammonia
50By which an element is best characterized?By its atomic number


1When ore is heated generally in absence of air then what is process called?0 65292Calcination
2Which pair does not contain a coinage metal?Zinc and Gold
3What is the most soluble in water?Sugar
4From where can renewable energy be obtained?Biomass
5When ice melts into water, which type of change occurs in entropy?Increases
6The pH of water at 25°C is 7.Remains same
7Which is produced during allergic reactions?Histamine
8What is the mixture of carbon monoxide and hydrogen called?Water gas
9In the leaf of tobacco what is found?Nicotin
10In which Molecule the distance between two adjacent carbon atoms is longest?Ethane
11Which charcoal is used to deeolourise raw sugar?Wood charcoal
12Which metal used to pollute the air of a big city?Lead
13Which form an irreversible complex With haemoglobin of blood?Carbon monoxide
14Regarding the atom of a chemical element, magnetic quantum number refers?Orientation
15When an ebonite rod is rubbed with fur, which charge acquired by the fur?Positive
16What is development of fruit without fertilization called?Parthenocarpy
17Which charcoal forms of carbon is used in sugar industry?Animal charcoal
18One molecule of hemoglobin can carry how many atom of oxygen?8
19Which is a source of methane emission into the atmosphere?Wetland
20Which is not an important condition for growth of coral?Wave-free salt water
21Which is the element common to all acids?Hydrogen
22What is the function of Leghaemoglobin in nitrogen fixation?Absorption of oxygen
23Which is the most important ore of aluminium?Bauxite
24Which chemical can be used is anticoagulent?Sodium citrate
25Carbon monoxide has how much greater affinity for haemoglobin as compared to oxygen? 65292200 times
26In which country does State funding of elections take place?Germany and Austria
27Starch iodide paper is used to test for the presence of which agent?Oxidising agent
28The powers of the Election Commission are given in which Article of the Constitution?324
29Which Element present in largest amount in human body?Oxygen
30What is formed by dissolution of base or acid in water?Exothermic
31Which processe is used to remove reducible oxides from the metal?Poling
32Mercury is transported in metal containers made of which metal?Iron
33What does lattitude place indicate?Temperature
34By whom was Cholera bacillus discovered?Robert Koch
35Stainless steel is an alloy of which metals?72 0Iron, chromium and nickel
36What is the oxidation number and covalency-of sulphur in S8?0, 2
37What is the substance which decreases the rate of a chemical reaction?Poison
38Dwarfness can be controlled by treating the plant with which acid?Gibberellic acid
39Which are the Chemicals having profound effect on growth and development?Phyto hormones
40Which is obtained, when H2S is passed through the solution of sodium zincate?ZnS
41Fish die in water bodies polluted by sewage, why?Due to Reduction in oxygen
42What is produced during the formation of photochemical smog?Nitrogen oxide
43Which place has no Ashokan edicts?Pataliputra
44Parthenocarpy fruit is obtained by which sprying phytohormone?Auxins
45Which is a non-metal that remains liquid at room- temperature?Bromine
46By which rular was the new element of 'Gopuram' encouraged in temples of South India?Cholas
47Which colloidal solution is commonly used as germ killer?Colloidal sulphur
48Which is an insectivorous plant?Pitcher plant
49What number of essential amino acid is found in man?20
50By which is the amount of light entering into the eye controlled?Iris