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4

Oil of winter green contains

A. acetone

B. ether

C. acetic acid

D. methyl salicylate

Correct Answer :

D. methyl salicylate


Related Questions

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Sulphur is readily soluble in

A. Water

B. Alcohol

C. Carbon-di-sulphide

D. Sodium chloride solution

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4

The flux added in the blast furnace is

A. Limestone

B. FeO

C. SiO2

D. MgO

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The scientist associated with the discovery of the nucleus was

A. Rutherford

B. Moseley

C. Niels Bohr

D. J.J. Thomson

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In surgical operation, the anaesthetic commonly used nowadays is

A. iodoform

B. chloroform

C. nitrous oxide-ether mixture

D. chloroform-nitrous oxide mixture

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Vinegar is an aqueous solution of

A. oxalic acid

B. citric acid

C. acetic acid

D. hydrochloric acid

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The main constituent of gobar gas is

A. methane

B. nitrogen

C. carbondioxide

D. ethylene

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The noble gas which is present in microscopic quantities in air is

A. xenon

B. krypton

C. argon

D. helium

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Which of the following is not an antibiotic?

A. streptomycin

B. terramycin

C. aureomycin

D. codein

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Ethyl alcohol is

A. a deliquescent substance

B. an efflorescent substance

C. a hygroscopic substance

D. a dehydrating substance

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Penicillin was discovered by

A. Alexander Fleming

B. Sir JJ Thomson

C. Dr Nessler

D. Sir John Russel

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High temperature thermometers use

A. sodium amalgam

B. an alloy of sodium and potassium

C. silver amalgam

D. calcium amalgam

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4

Which one of the following is used in dry cleaning of garments?

A. asphalt

B. naphtha

C. diesel oil

D. lubricating oil

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Brass contains

A. copper and tin

B. aluminium and magnesium

C. copper and zinc

D. copper, tin and zinc

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In the common soda-acid fire extinguisher, the fire is put out by

A. acid fumes

B. sodium bicarbonate

C. carbon dioxide

D. sodium carbonate

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Suspended impurities in water are effectively removed by

A. adding milk of lime

B. filtering through sand

C. adding filter alum

D. chlorination

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An acid which is used as a preservative for pickles is

A. hydrochloric acid

B. citric acid

C. tartaric acid

D. acetic acid

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Mild steel contains

A. iron with very low percentage of carbon

B. iron with high percentage of carbon

C. iron and chromium

D. iron and manganese

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The Long Form of the Periodic Table is based on

A. atomic number

B. valency

C. atomic mass

D. atomic radius

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Glass is a ______ mixture of metallic ______.

A. homogeneous, sulphates

B. heterogeneous, nitrates

C. heterogeneous, carbonates

D. homogeneous, silicates

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Which of the following statements regarding natural radioactivity is true?

A. It is spontaneous disintegration of atoms

B. It is induced by bombardment with projectiles

C. It is transmutation of atoms with projectiles

D. It is dependent on temperature

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Vulcanisation was discovered by

A. Goodyear

B. Wohler

C. Baeyer

D. Perkin

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The neutron was discovered by

A. Chadwick

B. Madam Curie

C. Becquerel

D. Aston

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The discoverer of chloroform was

A. Liebig

B. Pasteur

C. Bunsen

D. Erlenmeyer

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The purest form of carbon is

A. animal charcoal

B. coal

C. wood charcoal

D. sugar charcoal

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Annealing of glass is done in

A. a cupel

B. a long narrow chamber

C. an open furnace

D. a closed furnace

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The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known as

A. annealing

B. hardening

C. quenching

D. tempering

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4

Tincture iodine is a solution of

A. iodine in potassium iodide

B. iodine in alcohol

C. iodine in water

D. iodine in carbon disulphide

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Nylon is made from

A. terephthalic acid and ethylene glycol

B. hexamethylene diamine and adipic acid

C. cellulose nitrate

D. cellulose acetate

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Hydrogen gas has

A. a very sweet smell

B. a very pungent smell

C. an irritating smell

D. no smell at all

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One method by which the components of air can be separated is

A. shaking with caustic soda solution

B. shaking with water

C. fractional distillation of liquid air

D. passing air over heated magnesium