Iron is rendered passive by

Question

Iron is rendered passive by

A. conc. H2SO4

B. conc. HCl

C. conc. HNO3

D. acetic acid

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A common rodenticide is (Rat Poison)

A. malathion

B. parathion

C. zinc phosphide

D. diuron

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A drug that is usually administered for malaria is

A. sulphanilamide

B. quinine

C. methicillin

D. novocaine

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Which of the following is used as an illuminant?

A. Gasoline

B. Benzoline

C. Kerosene

D. Petroleum ether

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Phosgene is a compound of

A. red phosphorus and oxygen

B. white phosphorus and oxygen

C. carbon monoxide and chlorine

D. carbon dioxide and chlorine

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Galvanised iron sheets are protected from rusting due to the presence of a layer of

A. lead

B. chromium

C. zinc

D. tin

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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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The alloy added in the preparation of steel contains

A. Fe and C

B. Mn and C

C. Fe and Mn

D. Fe, Mn and C

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Which of the following can absorb gases quickly?

A. Activated charcoal

B. Anthracite coal

C. Diamond

D. Graphite

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Colour blindness is

A. a congenital disease

B. a communicable disease

C. an acquired disease

D. a contagious disease

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Vulcanisation was discovered by

A. Goodyear

B. Wohler

C. Baeyer

D. Perkin

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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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Solid carbon dioxide is used

A. as a drying agent

B. as a refrigerant

C. as an antiseptic

D. as a bleaching agent

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Galvanising is the process of coating

A. iron with zinc

B. zinc with iron

C. copper with silver

D. silver with gold

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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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Which one of the following gases is extremely soluble in water?

A. Carbon dioxide

B. Ammonia

C. Chlorine

D. Hydrogen sulphide

Discuss this answer

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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The name rubber was given by

A. Lavoisier

B. Priestley

C. Dalton

D. Avogadro

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Glass articles are annealed so that

A. they may appear better

B. they can resist the action of acids and alkalies

C. they lose their brittleness

D. they can withstand temperature shocks

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A metal which exhibits allotropy is

A. cobalt

B. tin

C. manganese

D. platinum

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Marsh gas is

A. ethane

B. ethylene

C. acetylene

D. methane

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The pure at form of iron is

A. wrought iron

B. steel

C. pig iron

D. nickel steel

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A non-material kind of pollution is

A. land pollution

B. air pollution

C. noise pollution

D. water pollution

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The purest form of carbon is

A. animal charcoal

B. coal

C. wood charcoal

D. sugar charcoal

Discuss this answer

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

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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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Calamine is a ore of

A. tine

B. magnesium

C. zinc

D. copper

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The iron salt used in blue prints is

A. ferric sulphate

B. ferric oxalate

C. ferric nitrate

D. ferric chloride

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Which of the following is a regenerated fibre?

A. Terylene

B. Rayon

C. Nylon

D. Silk

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The simplest hydrocarbon is

A. benzene

B. methane

C. ethane

D. butane

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Two or more entirely different compounds having the same molecular formula are known as

A. isobars

B. isotopes

C. isomorphs

D. isomers

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Accepted Answer

C. conc. HNO3

Iron is rendered passive by

Correct Answer :

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