set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Blue vitriol is

a) Iron sulphate

b) Copper sulphate

c) Calcium sulphate

d) Sodium sulphate

Question : 2

Amalgam is a solution of

a) liquid in solid

b) solid in solid

c) solid in liquid

d) liquid in liquid

Question : 3

What is the term used to denote the critical temperature at which the air becomes saturated with vapour and below which the condensation is likely to begin ?

a) Dew point

b) Condensation point

c) Evaporation point

d) Point of critical temperature

Question : 4

Which one among the following statements regarding the properties of mixtures and compounds is not correct?

a) The constituents of a mixture can be separated by physical methods but those of a compound cannot be separated by physical methods

b) A mixture shows the properties of its constituents but the properties of a compound are entirely different from its constituents

c) A mixture may be homogeneous or heterogeneous but a compound is a homogeneous substance

d) Energy is either absorbed or evolved during the preparation of a mixture but not in the preparation of a compound

Question : 5

Which one of the following is used in the preparation of antiseptic solution?

a) Iodine chloride

b) Potassium nitrate

c) Iodine

d) Potassium chloride

Question : 6

In which one of the following situations a chemical reaction does not occur?

a) Sodium is placed in water

b) Common salt is exposed to air

c) Coal is burnt in air

d) Iron is kept in moist air