Home
Current Affairs January 2024

What is the correct answer?

4

The best specimen for drinking purposes is

A. rain water

B. river water

C. conductivity water

D. deep well water

Correct Answer :

D. deep well water


Related Questions

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 a food preservative?

A. phenol

B. washing soda

C. absolute alcohol

D. vinegar

What is the correct answer?

4

The earliest known acid is

A. nitric acid

B. oxalic acid

C. carbonic acid

D. acetic acid

What is the correct answer?

4

Triple Antigen treatment for children is to ward off

A. whooping cough

B. tetanus

C. diphtheria

D. All the three

What is the correct answer?

4

The purest form of carbon is

A. animal charcoal

B. coal

C. wood charcoal

D. sugar charcoal

What is the correct answer?

4

The commonest ore of aluminium is

A. cryolite

B. bauxite

C. malachite

D. azurite

What is the correct answer?

4

White vitriol is

A. ZnSO4 . 7H2O

B. FeSO4 . 7H2O

C. MgSO4 . 7H2O

D. CaSO4 . 2H2O

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

Deficiency of iron causes

A. nervous disorders

B. heart diseases

C. anaemia

D. impairment of vision

What is the correct answer?

4

Gasoline is obtained from crude petroleum by

A. fractional distillation

B. fractional crystallisation

C. sublimation

D. evaporation

What is the correct answer?

4

Physico-chemical characteristics of water in water sources undergo changes due to

A. aquatic macrophytes

B. aquatic fungi

C. effluents

D. evapotranspiration

What is the correct answer?

4

Dry Ice is

A. solid carbon dioxide

B. liquid oxygen

C. liquid hydrogen

D. liquid. Chlorine

What is the correct answer?

4

The Long Form of the Periodic Table is based on

A. atomic number

B. valency

C. atomic mass

D. atomic radius

What is the correct answer?

4

Optical instruments are made of

A. pyrex glass

B. flint glass

C. quartz glass

D. Crooke's glass

What is the correct answer?

4

The compound used in photography is

A. ammonium dichromate

B. copper Sulphate

C. magnesium Sulphate

D. sodium thiosulphate

What is the correct answer?

4

Alum is used

A. as an analgesic

B. in the purification of water

C. as a fertilizer

D. as a disinfectant

What is the correct answer?

4

In the process of purification of water for town supply, the substance used to remove bad smell and colour from water is

A. charcoal

B. bleaching powder

C. chlorine

D. carbolic acid

What is the correct answer?

4

CAN is used as (Calcium Ammonium Nitrate)

A. an explosive

B. a fertilizer

C. a dye

D. a bleaching agent

What is the correct answer?

4

Rusting of iron cannot be prevented by

A. painting

B. applying alkaline phosphate

C. applying soap water

D. galvanising

What is the correct answer?

4

Penicillin was discovered by

A. Alexander Fleming

B. Sir JJ Thomson

C. Dr Nessler

D. Sir John Russel

What is the correct answer?

4

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

A. Nitrogen

B. Phosphorus

C. Potassium

D. Mercury

What is the correct answer?

4

Solder is an alloy of

A. tin and copper

B. tin and lead

C. tin and zinc

D. tin, copper and zinc

What is the correct answer?

4

Acute diabetes patients smell of

A. acetone

B. ether

C. ethyl alcohol

D. methyl alcohol

What is the correct answer?

4

A metal which exhibits allotropy is

A. cobalt

B. tin

C. manganese

D. platinum

What is the correct answer?

4

Which of the following is not a chemical change?

A. Rusting of iron

B. Burning of magnesium

C. Sublimation of iodine

D. Electrolysis of water

What is the correct answer?

4

Gold dissolves in aqua regia due to the formation of

A. chloro auric acid

B. auric chloride

C. gold nitrate

D. aurous chloride

What is the correct answer?

4

Mortar contains cement and sand in the ratio of

A. 1 : 1

B. 1 : 2

C. 2 : 3

D. 1 : 3

What is the correct answer?

4

Which of the following can absorb gases quickly?

A. Activated charcoal

B. Anthracite coal

C. Diamond

D. Graphite

What is the correct answer?

4

Apart from lead tetra-ethyl, the other compound used as antiknock is

A. n-heptane

B. n-octane

C. iso-heptane

D. iso-octane

What is the correct answer?

4

Marble is

A. calcium carbonate

B. sodium carbonate

C. magnesium sulphate

D. ferric chloride