Home
Current Affairs January 2024

What is the correct answer?

4

The compound or nitrogen used in dry cells is

A. ammonia

B. ammonium nitrate

C. ammonium chloride

D. ammonium nitrite

Correct Answer :

C. ammonium chloride


Related Questions

What is the correct answer?

4

Rusting is

A. an oxidation process

B. a reduction process

C. a physical change

D. an electro-chemical process

What is the correct answer?

4

Marble is

A. calcium carbonate

B. sodium carbonate

C. magnesium sulphate

D. ferric chloride

What is the correct answer?

4

Artificial diamonds were produced by

A. Moissan

B. Davy

C. Faraday

D. Marie Curie

What is the correct answer?

4

Solid carbon dioxide (Dry ice) is also known as

A. Thiokol

B. Drikold

C. Perhydrol

D. Mannitol

What is the correct answer?

4

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

What is the correct answer?

4

Which of the following is not an alloy of copper?

A. Bronze

B. Brass

C. Solder

D. Gun metal

What is the correct answer?

4

Graphite la a good conductor of electricity because

A. it is an allotrope of carbon

B. it gives CO2 on heating

C. it contains free electrons

D. it is oxidised to graphitic acid

What is the correct answer?

4

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

What is the correct answer?

4

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

What is the correct answer?

4

Which of the following carbon compounds is used as a fire extinguisher?

A. Carbon disulphide

B. Chloroform

C. Carbon tetrachloride

D. Methylene chloride

What is the correct answer?

4

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

What is the correct answer?

4

Isotopes differ in the number of

A. Protons

B. Neutrons

C. Electrons

D. Protons and electrons

What is the correct answer?

4

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

What is the correct answer?

4

A mixture of ethyl alcohol and water can be separated by

A. evaporation

B. sublimation

C. using a separating funnel

D. fractional distillation

What is the correct answer?

4

Soda-water contains

A. sodium bicarbonate

B. sodium carbonate

C. carbonic acid

D. sodium hydroxide

What is the correct answer?

4

Oil of winter green contains

A. acetone

B. ether

C. acetic acid

D. methyl salicylate

What is the correct answer?

4

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

What is the correct answer?

4

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

A. isobars

B. isotopes

C. isomorphs

D. isomers

What is the correct answer?

4

Cupellation is used in the purification of

A. Lead

B. Tin

C. Silver

D. Gold

What is the correct answer?

4

Which of the following is used as an illuminant?

A. Gasoline

B. Benzoline

C. Kerosene

D. Petroleum ether

What is the correct answer?

4

Ethyl alcohol is

A. a deliquescent substance

B. an efflorescent substance

C. a hygroscopic substance

D. a dehydrating substance

What is the correct answer?

4

Iron is rendered passive by

A. conc. H2SO4

B. conc. HCl

C. conc. HNO3

D. acetic acid

What is the correct answer?

4

Proteins are polymerisation products of

A. aldehydes

B. alkenes

C. amino acids

D. alkynes

What is the correct answer?

4

A compound used both as a fungicide and as a disinfectant is

A. chlorine

B. carbon monoxide

C. sulphur dioxide

D. o-cresol

What is the correct answer?

4

Compounds of nitrogen with metals are called

A. nitrates

B. nitrites

C. hyponitrates

D. nitrides

What is the correct answer?

4

An acid which is used as a preservative for pickles is

A. hydrochloric acid

B. citric acid

C. tartaric acid

D. acetic acid

What is the correct answer?

4

Solid carbon dioxide is used

A. as a drying agent

B. as a refrigerant

C. as an antiseptic

D. as a bleaching agent

What is the correct answer?

4

Even as early as 3000 BC glass was known to the

A. Europeans

B. Egyptians

C. Asians

D. Americans

What is the correct answer?

4

Calomel is

A. lead chloride

B. mercurous chloride

C. mercuric chloride

D. calcium sulphate

What is the correct answer?

4

Riboflavin deficiency causes

A. tongue inflammation

B. pellagra

C. night blindness

D. anaemia