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Current Affairs January 2024

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4

Chloroform used as anaesthetic should be preserved In the dark in tightly stoppered bottles because otherwise

A. it becomes coloured

B. it gets evaporated in air

C. it gets oxidised to phosgene

D. it gets decomposed to chloropicrin

Correct Answer :

C. it gets oxidised to phosgene


Related Questions

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4

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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4

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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4

A burning substance which continues to burn in a jar of carbon dioxide is

A. zinc

B. red phosphorus

C. magnesium

D. sulphur

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4

The chemical name of aspirin is

A. acetamide phenol

B. malonyl urea

C. aminosalicylic acid

D. acetyl salicylic acid

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4

Ethyl alcohol is

A. a deliquescent substance

B. an efflorescent substance

C. a hygroscopic substance

D. a dehydrating substance

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4

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

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4

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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4

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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4

The most abundant noble gas present in air is

A. neon

B. argon

C. helium

D. krypton

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4

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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4

Which one of the following is not radioactive?

A. Astatine

B. Francium

C. Tritium

D. Zirconium

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4

Argyrol used as eye ointment is a solution of

A. hydrogen peroxide

B. silver nitrate

C. tincture iodine

D. m-cresol

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4

The non-metal which is electropositive is

A. chlorine

B. nitrogen

C. sulphur

D. hydrogen

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4

The substance preserved under water is

A. potassium

B. sodium

C. red phosphorus

D. white phosphorus

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4

Vulcanisation was discovered by

A. Goodyear

B. Wohler

C. Baeyer

D. Perkin

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4

The number of neutrons in the nucleus of an atom of mass A and atomic number Z is given by

A. A - Z

B. A + Z

C. Z

D. A

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4

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

A. xenon

B. krypton

C. argon

D. helium

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4

Which of the following is a regenerated fibre?

A. Terylene

B. Rayon

C. Nylon

D. Silk

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4

PAS is a drug used In the treatment of

A. tuberculosis

B. cancer

C. typhoid

D. malaria

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4

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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4

Laughing gas is

A. nitric oxide

B. nitrogen peroxide

C. nitrogen pentoxide

D. nitrous oxide

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In photography, the compound or nitrogen used is

A. Potassium nitrate

B. Silver nitrate

C. Ammonium carbonate

D. Ammonium bicarbonate

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4

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

The sugar which is used in silvering mirrors is

A. sucrose

B. maltose

C. glucose

D. fructose

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4

Which of the following is used in fuel to propel rockets?

A. Petrol

B. Kerosene

C. Hydrazine

D. Alcohol

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4

The artificial silk produced from cellulose is

A. Polyethylene

B. Nylon

C. Terylene

D. Rayon

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4

Cinnabar is an ore of

A. lead

B. zinc

C. mercury

D. chromium

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4

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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4

The discoverer of chloroform was

A. Liebig

B. Pasteur

C. Bunsen

D. Erlenmeyer

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4

Calomel is

A. lead chloride

B. mercurous chloride

C. mercuric chloride

D. calcium sulphate