9th Class Chemistry MCQs

Which of the following does not affect the boiling point?

1. Intermolecular forces
2. External pressure
3. Initial temperature of liquid
4. Nature of liquid

The mobility of liquids is lesser than:

1. Solids
2. Gases
3. Plasma
4. Bose Einstein Condensate

Which of the following have sharp melting point in solids?

1. Plastic
2. Rubber
3. Glass
4. Diamond

Which of the following are lightest form of matter?

1. Solid
2. Liquid
3. Gases
4. Plasma

The liquid molecules leave the surface of liquid in evaporation process because:

1. Energy is low
2. Energy is moderate
3. Energy is high
4. None of these

The density of gases increases when its:

1. Pressure increased
2. Temperature increased
3. Volume increased
4. None of these

An alloy is the homogeneous mixture of:

1. Two solid
2. Two liquid
3. Two gases
4. Solid and liquid

A saturated solution of KCl on heating becomes:

1. Unsaturated
2. Supersaturated
3. Diluted
4. All of these

If we dissolve sand into the water, then the mixture is said to be:

1. Solution
2. Suspension
3. Colloids
4. Concentrated solution

Solubility is usually expressed in grams of the solute dissolved in ____gram of a solvent.

1. 10 grams
2. 100 grams
3. 500 grams
4. 1000 grams