Chemistry MCQs

Question 1

Which of the following is not a nitrogenous fetiliser?

Accepted Answer

Superphosphate

Answer

Ammonium sulphate

Answer

Urea

Answer

Ammonium nitrate

Question 2

Which one of the following is used as a sowing agent in the preparation of soft drinks?

Accepted Answer

Phosphoric acid

Answer

Phosphorus acid

Answer

Salicylic acid

Answer

Boric acid

Question 3

Pyrethrin used in mosquito coil is obtained from

Accepted Answer

A seed plant

Answer

An insect

Answer

A bacterium

Answer

A fungus

Question 4

What is a common name for the substance which irritates lachrymal glands ?

Accepted Answer

Tear Gas

Answer

Laughing Gas

Answer

Anaesthetic Gas

Answer

Noble Gas

Question 5

The material used in solar cells contains

Accepted Answer

Silicon

Answer

Tin

Answer

Caesium

Answer

Thallium

Question 6

Which of the following is used to iodise common salt ?

Accepted Answer

Potassium iodate

Answer

Potassium iodide

Answer

Iodine

Answer

Sodium iodide

Question 7

A thick paste of cement, sand and water is called

Accepted Answer

Mortar

Answer

Concrete

Answer

R.C.C.

Answer

Kiln

Question 8

What is the most commonly used substance in fluorescent tubes?

Accepted Answer

Mercury vapour and argon

Answer

Sodium oxide and argon

Answer

Sodium vapour and neon

Answer

Mercury oxide and neon

Question 9

Tear gas is :

Accepted Answer

Carbonyl chloride

Answer

Chloroprene

Answer

Nitrous oxide

Answer

Bleaching powder