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Current Affairs January 2024

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An important use of nitrous acid is in

A. the manufacture of explosives

B. the manufacture of dyes

C. refrigerators

D. the preparation of drugs

Correct Answer :

B. the manufacture of dyes


Related Questions

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Leakage in Liquefied Petroleum Gas (LPG) cylinders is easily detected by adding

A. mercaptans

B. propylene

C. carbon disulphide

D. phosgene

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The neutron was discovered by

A. Chadwick

B. Madam Curie

C. Becquerel

D. Aston

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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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Which of the following elements is not required for the healthy growth of plants?

A. Nitrogen

B. Phosphorus

C. Potassium

D. Mercury

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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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In the nitrogen cycle, denitrifying bacteria

A. oxidise ammonia to nitrates

B. convert nitrogen into ammonia

C. oxidise ammonia to free nitrogen

D. oxidise ammonia to oxides of nitrogen

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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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A mixture of carbon monoxide and hydrogen is

A. coal gas

B. producer gas

C. water gas

D. gobar gas

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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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Soda-water contains

A. sodium bicarbonate

B. sodium carbonate

C. carbonic acid

D. sodium hydroxide

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Vulcanisation was discovered by

A. Goodyear

B. Wohler

C. Baeyer

D. Perkin

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The substance preserved under water is

A. potassium

B. sodium

C. red phosphorus

D. white phosphorus

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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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PAS is a drug used In the treatment of

A. tuberculosis

B. cancer

C. typhoid

D. malaria

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Calomel is

A. lead chloride

B. mercurous chloride

C. mercuric chloride

D. calcium sulphate

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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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One of the ingredients of the paste on the side of a match box is

A. phosphorus pentaoxide

B. phosphorus trichloride

C. phosphorus trisulphide

D. phosphorus trioxide

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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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Rusting is

A. an oxidation process

B. a reduction process

C. a physical change

D. an electro-chemical process

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Biogas is obtained during

A. decomposition of petrol

B. fermentation of animal and plant waste

C. destructive distillation of coal

D. electrolysis of water

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The non-metal which has a shining appearance is

A. sulphur

B. phosphorus

C. iodine

D. bromine

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Artificial diamonds were produced by

A. Moissan

B. Davy

C. Faraday

D. Marie Curie

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The flux added in the blast furnace is

A. Limestone

B. FeO

C. SiO2

D. MgO

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An example of stimulant fertilizer is

A. gypsum

B. urea

C. potassium nitrate

D. ammonium phosphate

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Which or the following electrolysis?

A. Aluminium

B. Copper

C. Zinc

D. Iron

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Brine is a solution of

A. sodium chloride in water

B. iodine in alcohol

C. sulphur in carbon disulphide

D. Potassium iodide in water

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Laughing gas is

A. nitric oxide

B. nitrogen peroxide

C. nitrogen pentoxide

D. nitrous oxide

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Grape sugar is another name for

A. glucose

B. fructose

C. sucrose

D. maltose

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Quick lime has the formula

A. CaO

B. Ca(OH)2

C. NaOH

D. Na2CO3

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Compounds of nitrogen with metals are called

A. nitrates

B. nitrites

C. hyponitrates

D. nitrides