Samacheer Kalvi 10th Science Solutions Questions & Answers - 1

Question: 1

Which of the following is hygroscopic in nature?

(A) Silica gel

(B) Ferric chloride

(C) Copper sulphate penta hydrate

(D) None of the above

Ans: A

Silica gel

Question: 2

Which of the following is the universal solvent?

(A) Alcohol

(B) Acetone

(C) Benzene

(D) Water

Ans: D


Question: 3

Solubility of NaCl in 1000 ml water is 36 g. If 25 g salt is dissolved in 1000 ml of water how much more salt is required for saturation?

(A) 11 g

(B) 12 g

(C) 16 g

(D) 20 g

Ans: A

11 g

Question: 4

Identify the non aqueous solution.

(A) Sulphur in carbon-di-sulphide

(B) Copper sulphate in water

(C) Glucose in water

(D) Sodium chloride in water

Ans: A

Sulphur in carbon-di-sulphide

Question: 5

A solution in which no more solute can be dissolved in a definite amount of solvent at a given temperature is called

(A) Dilute solution

(B) Super saturated solution

(C) Saturated solution

(D) Unsaturated solution

Ans: C

Saturated solution

Question: 6

A 25% of alcohol solution means

(A) 25 ml alcohol in 25 ml of water

(B) 25 ml alcohol in 75 ml of water

(C) 25 ml alcohol in 100 ml of water

(D) 75 ml alcohol in 25 ml of water

Ans: B

25 ml alcohol in 75 ml of water

Question: 7

A solution is a ____ mixture.

(A) Heterogeneous

(B) Homogeneous

(C) Homogeneous and heterogeneous

(D) Non homogeneous

Ans: B


Question: 8

The number of components in a binary solution is

(A) 2

(B) 3

(C) 4

(D) 5

Ans: A


Question: 9

When pressure is increased at constant temperature the solubility of gases in liquid

(A) Increases

(B) Decreases

(C) No change

(D) No reaction

Ans: A


Question: 10

Deliquescence is due to

(A) Inertness of water

(B) Strong hatred to water

(C) Less affinity to water

(D) Strong affinity to water

Ans: D

Strong affinity to water