Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to

Question

Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to

A. dehydration

B. oxidation

C. reduction

D. dehydrogenation

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Bordeaux mixture contains

A. copper sulphate and water

B. copper sulphate, lime and water

C. thio-urea and lime

D. copper sulphate and thio-urea

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Petroleum ether is also known as

A. kerosene

B. naphtha

C. lubricating oil

D. asphalt

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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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The rate of setting of cement is slowed down by the addition of

A. quicklime

B. gypsum

C. soda lime

D. bleaching powder

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Which or the following electrolysis?

A. Aluminium

B. Copper

C. Zinc

D. Iron

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The soaps used in shaving cream are

A. calcium soaps

B. lead soaps

C. soft soaps

D. hard soaps

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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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Flint glass contains

A. potassium and lead silicates

B. zinc and barium borosilicates

C. potassium and calcium silicates

D. sodium and calcium silicates

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Rusting is a special case of corrosion applied to

A. nickel

B. tin

C. iron

D. chromium

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Vulcanisation was discovered by

A. Goodyear

B. Wohler

C. Baeyer

D. Perkin

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Cupellation is used in the purification of

A. Lead

B. Tin

C. Silver

D. Gold

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Radium was isolated from

A. galena

B. dolomite

C. sylvine

D. pitchblende

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Copper is purified by

A. poling

B. tempering

C. calcination

D. galvanising

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The carbon cycle ensures that

A. the percentage of carbon dioxide in air is kept almost constant

B. air always contains a constant proportion of oxygen

C. sufficient amounts of carbohydrates are produced

D. the process of photosynthesis proceeds smoothly

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The most abundant noble gas present in air is

A. neon

B. argon

C. helium

D. krypton

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Which among the following is a metalloid?

A. Tin

B. Silver

C. Iodine

D. Arsenic

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The gas which has a faint sweet odour is

A. nitrogen

B. nitrous oxide

C. nitric oxide

D. nitrogen peroxide

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Alum is used

A. as an analgesic

B. in the purification of water

C. as a fertilizer

D. as a disinfectant

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BHC is a

A. Rodenticide

B. Herbicide

C. Pesticide

D. Fungicide

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Which or the following is not a constituent or gun powder?

A. Ammonium nitrate

B. Nitre

C. Charcoal powder

D. Sulphur

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The substance preserved under water is

A. potassium

B. sodium

C. red phosphorus

D. white phosphorus

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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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Glass is a mixture of metallic .

A. homogeneous, sulphates

B. heterogeneous, nitrates

C. heterogeneous, carbonates

D. homogeneous, silicates

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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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Mortar contains cement and sand in the ratio of

A. 1 : 1

B. 1 : 2

C. 2 : 3

D. 1 : 3

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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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A light alloy having high tensile strength is

A. German silver

B. solder

C. magnalium

D. bell metal

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The function of nitrogen in air is

A. to make air a moderate supporter of combustion

B. to maintain the density of air constant

C. to prevent the hydrogen in air from exploding

D. to reduce the poisonous nature of ozone in air

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A metal which exhibits allotropy is

A. cobalt

B. tin

C. manganese

D. platinum

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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

Discuss this answer

Accepted Answer

B. oxidation

Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to

Correct Answer :

Show all General Chemistry MCQ

Related Questions

Bordeaux mixture contains

Petroleum ether is also known as

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Which or the following electrolysis?

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Tincture iodine is a solution of

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Also checkout

Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to

Correct Answer :

Show all General Chemistry MCQ

Related Questions

Bordeaux mixture contains

Petroleum ether is also known as

Which of the following is used as an illuminant?

The rate of setting of cement is slowed down by the addition of

Which or the following electrolysis?

The soaps used in shaving cream are

Tincture iodine is a solution of

Flint glass contains

Rusting is a special case of corrosion applied to

Vulcanisation was discovered by

Cupellation is used in the purification of

Radium was isolated from

Copper is purified by

The carbon cycle ensures that

The most abundant noble gas present in air is

Which among the following is a metalloid?

The gas which has a faint sweet odour is

Alum is used

BHC is a

Which or the following is not a constituent or gun powder?

The substance preserved under water is

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

Glass is a ______ mixture of metallic ______.

A drug that is usually administered for malaria is

Mortar contains cement and sand in the ratio of

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

A light alloy having high tensile strength is

The function of nitrogen in air is

A metal which exhibits allotropy is

Suspended impurities in water are effectively removed by

Also checkout

Glass is a mixture of metallic .