Refined petroleum is decolourised by

Question

Refined petroleum is decolourised by

A. manganese dioxide

B. bauxite

C. animal charcoal

D. quicklime

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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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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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Which one of the following is used for dry cleaning?

A. Kerosene oil

B. Diesel oil

C. Lubricating oil

D. Petroleum ether

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The ore of iron is

A. Dolomite

B. Magnetite

C. Bauxite

D. Anglesite

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Which of the following is not a chemical change?

A. Burning of magnesium ribbon in air

B. Distillation of water

C. Heating of cane sugar

D. Setting of cement

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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

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The main element used in the vulcani-sation of rubber is

A. nickel

B. copper

C. sulphur

D. graphite

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An essential condition for rusting is

A. high temperature

B. light

C. moisture

D. dry air

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A mixture of carbon monoxide and hydrogen is

A. coal gas

B. producer gas

C. water gas

D. gobar gas

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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

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Plastics are synthetic

A. rubbers

B. fibres

C. resins

D. sugars

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The vitamin that is found in citrus fruits such as lemon and orange is

A. vitamin C

B. vitamin B2

C. vitamin A

D. vitamin E

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The pH or pure water is nearly 7.0 It will increase on the addition or

A. hydrochloric acid

B. ammonia

C. cane sugar

D. common salt

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Which of the following is a halogen?

A. Radon

B. Astatine

C. Cesium

D. Ruthenium

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Washing soda is

A. sodium hydroxide

B. sodium carbonate

C. sodium bicarbonate

D. potassium chloride

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Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust?

A. Silicon

B. Oxygen

C. Carbon

D. Calcium

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The compound or nitrogen used in dry cells is

A. ammonia

B. ammonium nitrate

C. ammonium chloride

D. ammonium nitrite

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The addition of a neutron to the nucleus of an atom

A. increases the atomic mass of the atom

B. decreases the atomic mass of the atom

C. increases the charge on the nucleus

D. decreases the charge on the nucleus

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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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Which among the following is a local anaesthetic?

A. Chloroform

B. Morphine

C. Streptomycin

D. Cocaine

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Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?

A. Aluminium

B. Chromium

C. Nickel

D. Tungsten

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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 among the following is a metalloid?

A. Tin

B. Silver

C. Iodine

D. Arsenic

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Laughing gas is

A. nitric oxide

B. nitrogen peroxide

C. nitrogen pentoxide

D. nitrous oxide

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Which of the following is a regenerated fibre?

A. Terylene

B. Rayon

C. Nylon

D. Silk

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A hormone which contains iodine is

A. adrenalin

B. glucagon

C. epinephrin

D. thyroxin

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Rayon la made from

A. cotton

B. wool

C. cellulose

D. silk

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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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Which of the following is used as an illuminant?

A. Gasoline

B. Benzoline

C. Kerosene

D. Petroleum ether

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Boiler scales' contain

A. calcium carbonate

B. magnesium bicarbonate

C. calcium sulphate

D. magnesium sulphate

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Accepted Answer

B. bauxite

Refined petroleum is decolourised by

Correct Answer :

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Related Questions

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

The function of nitrogen in air is

Which one of the following is used for dry cleaning?

The ore of iron is

Which of the following is not a chemical change?

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

The main element used in the vulcani-sation of rubber is

An essential condition for rusting is

A mixture of carbon monoxide and hydrogen is

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Plastics are synthetic

The vitamin that is found in citrus fruits such as lemon and orange is

The pH or pure water is nearly 7.0 It will increase on the addition or

Which of the following is a halogen?

Washing soda is

Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust?

The compound or nitrogen used in dry cells is

The addition of a neutron to the nucleus of an atom

The purest form of carbon is

Which among the following is a local anaesthetic?

Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?

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

Which among the following is a metalloid?

Laughing gas is

Which of the following is a regenerated fibre?

A hormone which contains iodine is

Rayon la made from

Sulphur is readily soluble in

Which of the following is used as an illuminant?

Boiler scales' contain

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