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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