set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Non-reacting gases have a tendency to mix with each other. This phenomenon is known as

a) effusion

b) chemical reaction

c) diffusion

d) explosion

Question : 2

Which one among the following is a sin smelling agent added to LPG cylinder to help the detection of gas leakage?

a) Methane

b) Ethanol

c) Thioethanol

d) Chloroform

Question : 3

Match the following columns?

a) A - 4, B - 2, C - 3, D - 1

b) A - 2, B - 3, C - 1, D - 4

c) A - 1, B - 2, C - 4, D - 3

d) A - 1, B - 2, C - 3, D - 4

Question : 4

Which one of the following mixtures is homogeneous?

a) Graphite and charcoal

b) Starch and sugar

c) Methanol and water

d) Calcium carbonate and calcium bicarbonate

Question : 5

In which of the following the constituents are present in any ratio?

a) Solution

b) Compound

c) Mixture

d) Colloid

Question : 6

Which of the following is an example of a heterogeneous substance?

a) Pieces of copper

b) Table salt

c) Bottled water

d) Candle