Chemistry MCQ (Multiple Choice Questions) - SchoolingAxis

Chemistry MCQ (Multiple Choice Questions)

 Que- DDT and BHC may act as 

a. Allergens 

b. Carcinogens 

c. Asthematic agents 

d. None of these 


Answer- Carcinogens


Que- Gunpowder consists of a mixture of 

a. Sand and TNT 

b. TNT and charcoal 

c. Nitre, sulphur and charcoal 

d. Sulphur, sand and charcoal 


Answer- Nitre, sulphur and charcoal


Que- Which of the following is not a noble gas ? 

a. Hydrogen 

b. Helium 

c. Neon 

d. Argon 


Answer- Hydrogen


Que- Milk is a 

a. Mixture 

b. Element 

c. Metal 

d. None of these 


Answer- Mixture


Que- Mixture can be 

a. Homogeneous 

b. Heterogeneous 

c. Both A and B 

d. Pure substance 


Answer- Both A and B


Que- Which one out of the following helps in burning ? 

a. Oxygen 

b. Carbon monoxide 

c. Nitrogen 

d. Carbon dioxide 


Answer- Oxygen


Que- Except mercury which is the other metal that is liquid at standard conditions for temperature and pressure? 

a. Lead 

b. Bromine 

c. Barium 

d. Magnesium 


Answer- Bromine


Que- Synthetic detergents are made from 

a. Sodium stearate 

b. Sodium salt of benzene sulphonic acid 

c. Sodium salt of benzene carboxylic acid 

d. Sodium palmitate 


Answer- Sodium salt of benzene sulphonic acid


Que- Commonly used antiseptic 'Dettol' is a mixture of 

a. O-chlorophenoxylenol + terepineol 

b. O-cresol + terepineol 

c. Phenol + terepineol 

d. Chloroxylenol + terepineol 


Answer- Chloroxylenol + terepineol


Que- The gas used in the artificial ripening of fruits is 

a. Acetylene 

b. Methane 

c. Ethane 

d. Butane 


Answer- Acetylene


Que- The common refrigerant in domestic refrigerator is 

a. Neon 

b. Oxygen 

c. Nitrogen 

d. Freon 


Answer- Freon


Que- The chemical used in embalming biological materials is 

a. Formaldehyde in water 

b. Formaldehyde in methanol 

c. Ethylene glycol 

d. Gaseous formaldehyde 


Answer- Formaldehyde in water


Que- The drug ‘Marijuana’ is a 

a. Sedative 

b. Mental stimulant 

c. Hallucinating substance 

d. Tranquillizer 


Answer- Sedative


Que- The Refrigerant 'FREON' is 

a. Calcium Tetra Fluoride 

b. Difluoro Dichloro Methane 

c. Fluorspar and Felspar 

d. Hydrofluosilicic Acid 


Answer- Difluoro Dichloro Methane


Que- The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are 

a. Silver Iodide 

b. Sodium Chloride 

c. Dry ice or frozen carbon dioxide 

d. All the above 


Answer- Silver Iodide


Que- 'Fire-fighting clothes' are made from 

a. Mica 

b. Asbestos 

c. Talc 

d. Steatite 


Answer- Asbestos


Que- Trinitrotoluene is 

a. Used to melt metals 

b. Used to fuse two metals 

c. Used as an abrasive 

d. Used as an explosive 


Answer- Used as an explosive


Que- Ferrous sulphate is used in water treatment as a/an 

a. Oxidizing agent 

b. Reducing agent 

c. Coagulant aid 

d. Adsorbent 


Answer- Coagulant aid


Que- Charcoal is used in water treatment as a/an 

a. Absorbent 

b. Coagulant 

c. Solvent 

d. Adsorbent 


Answer- Adsorbent


Que- Which of the following is a secondary pollutant ? 

a. NO 

b. CO 

c. SO2 

d. PAN 


Answer- CO


Que- Ultraviolet radiation striking the earth is due to the depletion of 

a. Carbon monoxide 

b. Carbon dioxide 

c. Ozone 

d. Oxygen 


Answer- Ozone


Que- Many people died in London in 1952 as result of air pollution producing 

a. Mist 

b. Fog 

c. Smog 

d. Sleet 


Answer- Smog


Que- Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives 

a. Copper at cathode and oxygen at anode 

b. Copper at anode and oxygen at cathode. 

c. Copper at cathode and anodes dissolve to give copper 

d. Hydrogen at cathode and oxygen at anode 


Answer- Copper at cathode and oxygen at anode


Que- Aluminium can be purified by 

a. Oxidation 

b. Distillation 

c. Electrolysis 

d. Ozonolysis 


Answer- Electrolysis


Que- The aqueous solution of potassium chloride is 

a. A weak electrolyte 

b. A strong electrolyte 

c. A non-electrolyte 

d. Initially weak and then become a strong electrolyte 


Answer- A strong electrolyte


Que- Sodium is produced by the electrolysis of 

a. Molten sodium carbonate 

b. Molten sodium chloride 

c. Aqueous brine solution 

d. Its cyanide complex 


Answer- Molten sodium chloride


Que- Bleaching powder is prepared by passing : 

a. Chlorine over slaked lime 

b. Oxygen over slaked lime 

c. Carbon dioxide over slaked lime 

d. Chlorine over quick lirne 


Answer- Chlorine over slaked lime


Que- Which of the following gases is present under pressure in soft drinks? 

a. Oxygen 

b. Nitrogen 

c. Carbon dioxide 

d. Nitrous oxide 


Answer- Carbon dioxide


Que- If we burn graphite, 

a. Residue will be left 

b. No residue will be left 

c. It will not burn 

d. It will change into diamond 


Answer- No residue will be left


Que- Lead pencil contains 

a. Lead 

b. Ferrous sulphide 

c. Lead sulphide 

d. Graphite 


Answer- Graphite


Que- Highest percentage of carbon is found in which form of coal? 

a. Anthracite 

b. Bituminous 

c. Peat 

d. Lignite 


Answer- Anthracite


Que- The main source of carbon monoxide is 

a. Industrial process 

b. Fuel combustion 

c. Transportation 

d. Solid waste disposal 


Answer- Transportation


Que- Which among the following is used to dilute oxygen in the gas cylinders used by divers ? 

a. Krypton 

b. Argon 

c. Helium 

d. Neon 


Answer- Helium


Que- Which one element from below list is liquid at room temperature? 

a. Zinc 

b. Argon 

c. Lead 

d. Bromine 


Answer- Bromine


Que- Which among the following elements is found in maximum percentage in the human body ? 

a. Carbon 

b. Hydrogen 

c. Nitrozen 

d. Oxygen 


Answer- Oxygen


Que- Iodine can be separated from a mixture of Iodine and Potassium Chloride by 

a. Sedimentation 

b. Filtration 

c. Sublimation 

d. Distillation 


Answer- Sublimation


Que- The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing is: 

a. Neon 

b. Argon 

c. Krypton 

d. Helium 


Answer- Helium


Que- The number of d-electrons in Fe2+ (Z = 26) is not equal to that of 

a. p-electrons in Ne(Z = 10) 

b. s-electrons in Mg(Z = 12) 

c. d-electrons in Fe(Z = 26) 

d. p-electrons in CI(Z = 17) 


Answer- p-electrons in CI(Z = 17)


Que- The metallurgical process in which a metal is obtained in a fused state is called 

a. smelting 

b. roasting 

c. calcinations 

d. froth floatation 


Answer- smelting


Que- The molecules of which gas have highest speed? 

a. H2 at -73oC 

b. CH4 at 300 K 

c. N2 at 1,027oC 

d. O2 at 0oC 


Answer- H2 at -73oC


Que- The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth's early life and solidified into hard rock's called 

a. granite 

b. basalt 

c. igneous rocks 

d. sedimentary rocks 


Answer- igneous rocks


Que- The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is 

a. Dalton's law 

b. Gay Lussac's law 

c. Henry's law 

d. Raoult's law 


Answer- Henry's law


Que- Terylene is a condensation polymer of ethylene glycol and which acid? 

a. Benzoic Acid 

b. Salicylic acid 

c. Phthalic acid 

d. Terephthalic acid 


Answer- Terephthalic acid


Que- The material known in commerce as Terylene is a 

a. Synthetic fibre 

b. Natural fibre 

c. Modified natural fibre 

d. Blend of cotton and silk 


Answer- Synthetic fibre


Que- Nylon is a type of 

a. Polyamide 

b. Polyolefin 

c. Polyester 

d. Acrylic 


Answer- Polyamide


Que- Nylon is made up of : 

a. Polyamide 

b. Polyester 

c. Polyethylene 

d. Polypropylene 


Answer- Polyamide


Que- Nylon threads are made of 

a. Polyester polymer 

b. Polyamide polymer 

c. Polyvinyl polymer 

d. Polysaccharide 


Answer- Polyamide polymer


Que- For generation of biogas, the materials commonly used are 

a. Animal wastes 

b. Crop residues 

c. Aquatic plants 

d. Forest residues 


Answer- Animal wastes


Que- The main constituent of natural gas is 

a. Methane 

b. Ethane 

c. Butane 

d. Propane 


Answer- Methane


Que- Which of the following is biodegradable ? 

a. Paper 

b. D.D.T. 

c. Aluminium 

d. Plastic 


Answer- Paper


Que- Which of the following is a commercial source of energy? 

a. Agricultural waste 

b. Dried dung 

c. Sun 

d. Natural gas 


Answer- Natural gas


Que- Which of the following is not a commercial source of energy? 

a. Coal 

b. Petroleum 

c. Natural Gas 

d. Firewood 


Answer- Firewood


Que- The alkaloid naturally found in coffee, cocoa and cola nut is 

a. Cocaine 

b. Morphine 

c. Tannin 

d. Caffeine 


Answer- Caffeine


Que- Formic acid is produced by 

a. White ants 

b. Cockroaches 

c. Red ants 

d. Mosquitoes 


Answer- Red ants


Que- Which one of the following is most acidic? 

a. Al2O3 

b. Na2O 

c. MgO 

d. CaO 


Answer- Al2O3


Que- Milk tastes sour when kept in the open for sometime due to the formation of 

a. Lactic acid 

b. Citric acid 

c. Acetic acid 

d. Carbonic acid 


Answer- Lactic acid


Que- ________ is used for making vinegar. 

a. Tartaric acid 

b. Malic acid 

c. Oxalic acid 

d. Acetic acid 


Answer- Acetic acid


Que- When there are two electrons in the same orbital, they have: 

a. Same spin 

b. Opposite spin 

c. Same or opposite spin 

d. No spin 


Answer- Opposite spin


Que- The antiparticle of an electron is 

a. Positron 

b. Proton 

c. Alpha particles 

d. Beta particles 


Answer- Positron


Que- Nucleons are regarded as composites sub-particles known as 

a. Mesons 

b. Quarks 

c. Leptons 

d. Photons 


Answer- Quarks


Que- Conduction band electrons have more mobility than holes because they 

a. Are lighter 

b. Experience collision less frequently 

c. Have negative charge 

d. Need less energy to move them 


Answer- Experience collision less frequently


Que- Which one of the following has greatest mass ? 

a. Electron 

b. Proton 

c. Neutron 

d. Hydrogen nucleus 


Answer- Neutron


Que- The polymer obtained by the condensation of hexamethylene diamine and adipic acid is : 

a. Nylon 66 

b. Terylene 

c. Tollen's 

d. Bakelite 


Answer- Nylon 66


Que- Neoprene is prepared by polymerisation of which of the following 

a. 2-chloro-1, 3-butadiene 

b. 2-methyl 1, 3-butadiene 

c. 1,3-butadiene 

d. Acrylonitrile 


Answer- 2-chloro-1, 3-butadiene


Que- Neoprene is a polymer of 

a. Chloroprene 

b. Isoprene 

c. Isobutane 

d. Isopentane 


Answer- Chloroprene


Que- Silicone is a polymer of 

a. Tetraalkyl silane 

b. Silicon tetrachloride 

c. Dialkyl dichloro silane 

d. Silane 


Answer- Dialkyl dichloro silane


Que- The monomers of dacron are 

a. Decane and decanol 

b. Decanone and decanol 

c. Ethylene glycol and terephthalic acid 

d. Ethylene glygol and phthalic acid 


Answer- Ethylene glycol and terephthalic acid


Que- The metal that is usually extracted from sea water is 

a. Ca 

b. Na 

c. K 

d. Mg 


Answer- Mg


Que- The method of concentrating the ore which makes use of the difference in density between ore and impurities is called 

a. liquation 

b. leaching 

c. levigation 

d. magnetic separation 


Answer- levigation


Que- The inert gases are ____ in water. 

a. sparingly soluble 

b. insoluble 

c. soluble 

d. None of these 


Answer- sparingly soluble


Que- The molecular formula of phosphorous is 

a. P1 

b. P2 

c. P3 

d. P4 


Answer- P4


Que- The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of 

a. atomic structure 

b. metallurgy 

c. periodic table of contents 

d. discovery of elements 


Answer- periodic table of contents


Que- Atoms of same element having different mass numbers are called________ 

a. Isobars 

b. Isotopes 

c. Isotones 

d. Isomers 


Answer- Isotopes


Que- How many neutrons does iron have? 

a. 8 

b. 13 

c. 26 

d. 30 


Answer- 30


Que- The electronic configuration of an atom having atomic number ‘20’ is 

a. 2, 8, 10 

b. 2, 6, 8, 4 

c. 2, 8, 8, 2 

d. 2, 10, 8 


Answer- 2, 8, 8, 2


Que- Nucleus of an atom consists of. 

a. Proton 

b. Neutron 

c. Proton and Neutron 

d. Electron, Proton and Neutron 


Answer- Proton and Neutron


Que- Which of the following is not a nucleon? 

a. Proton 

b. Neutron 

c. Electron 

d. Positron 


Answer- Positron


Que- The purest form of Iron is : 

a. Cast iron 

b. Steel 

c. Pig iron 

d. Wrought iron 


Answer- Wrought iron


Que- Which one of the following contains maximum percentage of carbon ? 

a. Cast iron 

b. Stainless steel 

c. Wrought iron 

d. High speed steel 


Answer- Cast iron


Que- Stainless steel is an alloy of 

a. Chromium and carbon 

b. Chromium, carbon and iron 

c. Chromium and iron 

d. Carbon and iron 


Answer- Chromium, carbon and iron


Que- Iron is extracted from 

a. Cinnabar 

b. Haematite 

c. Bauxite 

d. Dolomite 


Answer- Haematite


Que- Which is the purest form of iron? 

a. Steel 

b. Cast iron 

c. Pig iron 

d. Wrought iron 


Answer- Wrought iron


Que- Which among the following metals provides amphoteric oxide ? 

a. Sodium 

b. Silver 

c. Aluminium 

d. Calcium 


Answer- Aluminium


Que- Impure camphor is purified by 

a. Sublimation 

b. Fractional crystallisation 

c. Fractional distillation 

d. Steam distillation 


Answer- Sublimation


Que- Iron filings can be separated from a heterogeneous mixture using the technique of : 

a. Sublimation 

b. Magnetization 

c. Sedimentation 

d. Evaporation 


Answer- Magnetization


Que- Electric bulbs are filled with : 

a. Nitrogen 

b. Carbon dioxide 

c. Argon 

d. Oxygen 


Answer- Argon


Que- The most abundant inert gas in the atmosphere is 

a. Helium 

b. Neon 

c. Argon 

d. Krypton 


Answer- Argon


Que- The strongest acid of the following is 

a. P-chlorophenol 

b. M-nitrophenol 

c. P-nitrophenol 

d. O-nitrophenol 


Answer- P-nitrophenol


Que- Methanoic and ethanoic acids can be distinguished by the action of 

a. NaHCO3 

b. NaOH 

c. Tollen's reagent 

d. SOCl2 


Answer- Tollen's reagent


Que- Which of the following alkali metals has highest specific heat? 

a. Caesium 

b. Rubidium 

c. Potassium 

d. Lithium 


Answer- Lithium


Que- Among the fuels given below, the one with highest calorific value is 

a. Coke 

b. Coal 

c. Wood 

d. Natural gas 


Answer- Natural gas


Que- Which of the following is the best fuel in terms of energy released per gram of fuel? 

a. Hydrogen 

b. Methane 

c. Ethanol 

d. Butane 


Answer- Hydrogen


Que- The most volatile of the given liquids is 

a. Ether 

b. Liquid 

c. Liquid NH3 

d. Liquid He 


Answer- Liquid He


Que- The three elements most needed in common fertilisers are : 

a. Sulphur, Phosphorous and Sodium 

b. Nitrogen, Potassium and Phosphorous 

c. Phosphorous, Sodium and Nitrogen 

d. Calcium, Phosphorous and Potassium 


Answer- Nitrogen, Potassium and Phosphorous


Que- Liquid Nitrogen boils at 

a. 77 kelvin 

b. 82 Kelvin 

c. 54 kelvin 

d. 97 Kelvin 


Answer- 77 kelvin


Que- Which one of the following is not a fertilizer? 

a. Ammonium sulphate 

b. Calcium sulphate 

c. Calcium ammonium nitrate 

d. Potassium nitrate 


Answer- Calcium sulphate


Que- Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs? 

a. Methane 

b. Nitrogen 

c. Helium 

d. Hydrogen 


Answer- Nitrogen


Que- Bauxite is used as raw material by which industry ? 

a. Aluminium 

b. Iron 

c. Steel 

d. Gold 


Answer- Aluminium


Que- Brass contains 

a. Copper and Zinc 

b. Copper and Tin 

c. Copper and Silver 

d. Copper and Nickel 


Answer- Copper and Zinc


Que- Brass is a 

a. Compound 

b. Element 

c. Homogeneous mixture 

d. Heterogeneous mixture 


Answer- Homogeneous mixture

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