Chemistry · Science General

States of Matter

2,682 Questions

States of matter questions explore physical changes, evaporation, phase transitions, and the properties of liquids and gases. Topics cover density, cryosurgery, heavy water, and electrolytes. This foundational chemistry topic frequently appears in general science sections of SSC and railway exams.

Phase change mechanismsEvaporation and temperature effectsProperties of liquidsPhysical versus chemical changesElectrolytes and heavy water

States of Matter Questions

Multiple choice

The effectiveness of soap is reduced when it is used in

  1. hot water

  2. warm water

  3. hard water

  4. soft water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct Answer: hard water Soap is not an effective cleansing agent when used with hard water, as the calcium and magnesium ions in the hard water form insoluble salts with soap which stick to the cloth as scum.

Multiple choice

Which of the following is rich in deuterium?

  1. Soft water

  2. Heavy water

  3. Hard water

  4. Distilled water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct Answer: Heavy water Deuterium is the heavier isotope of hydrogen, and water molecule that comprises of deuterium atoms is called heavy water. 

Multiple choice

Which of the following statements about water is not correct?

  1. Water shows capillary action.

  2. Ice is lighter than water.

  3. Water is a very good solvent.

  4. The density of water is maximum at 0oC.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water has a special association between its molecules, called hydrogen bond, because of which it shows anomalous expansion on cooling from 0oC to 4oC. Hence, the density of water is maximum at 4oC.

Multiple choice

Mixture has__________?

  1. fixed composition

  2. no fixed composition

  3. fixed elements

  4. both (1) and (3)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mixture has no fixed composition.

Multiple choice

Which of the following is a characteristic of both mixtures and compounds?

  1. Their properties are same as those of their compounds.

  2. Energy is absorbed when they are formed.

  3. Their masses is equal to the sum of the masses of their components.

  4. They contain the components in fixed proportion.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Their masses is equal to the sum of the masses of their components.

Multiple choice

In which of the following colloids, the dispersing medium is solid and dispersed phase is gas?

  1. Cheese

  2. Rubber

  3. Face cream

  4. Mist
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cheese is a colloid in which dispersing medium is solid while dispersed phase is liquid. Rubber is a colloid in which dispersion medium is solid and dispersed phase is gas. In face cream, both dispersed phase and dispersion medium are liquids. Moreover, in mist, dispersion medium is gas and dispersed phase is liquid. Thus, option (2) is correct.