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