Chemistry · Science General

States of Matter

2,382 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

_____________ is called the universal solvent.

  1. Petrol

  2. Water

  3. Honey

  4. Diesel

  5. Mercury
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. Water can eventually dissolve everything, which is kept in it. Thus, water is called a universal solvent.

Multiple choice

Which of the following statements is true regarding mixtures?

  1. Mixtures are of three types.

  2. The components of a mixture do not retain their properties.

  3. Components of a mixture are present in any proportion.

  4. Mixtures are pure substances.

  5. Mixture is made up of one type of element.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is the correct answer. Components of a mixture are present in any proportion.

Multiple choice

Which of the following statements is false regarding the properties of a suspension?

  1. Suspensions are a heterogeneous mixture of two or more substances.

  2. Particles of solute do not dissolve in solvent.

  3. The size of particles of suspension is very small.

  4. Suspension shows Tyndall effect.

  5. Milk of magnesia is a suspension.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is the correct answer as this statement is false. The size of particles of suspension is large enough to be visible from naked eye.

Multiple choice

Which of the following pairs of solvent and solute is incorrect?

  1. Water - Solvent in salt solution, Salt - Solute in salt solution

  2. Iodine - Solvent in tincture of iodine, Alcohol - Solute in tincture of iodine

  3. Water - Solvent in lemonade, Lemon - Solute in lemonade

  4. Carbon - Solute in steel, Iron - Solvent in steel

  5. Nitrogen - Solvent in air, Other gases - Solute in air
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

No, here solvent is alcohol and iodine is the solute. Hence, it is the correct answer. 

Multiple choice

What happens when a paper is oiled?

  1. The paper will become translucent.

  2. The paper will become opaque.

  3. It will become transparent.

  4. The paper will melt.

  5. NA
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Translucent objects allow light to partially pass through it. Hence, it is correct.

Multiple choice

A solid transitioning to gas without melting is called as

  1. boiling

  2. melting

  3. fission

  4. fusion

  5. sublimation
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The direct transition of a solid to a vapour without passing through a liquid phase is known as sublimation. Examples: the transition of solid CO2 to CO2 vapour.

Multiple choice

Which of the following statements is / are correct? A. The process of evaporation causes cooling. B. Diffusion takes place in a haphazard and random way. C. The process of melting glass is known as annealing.

  1. A only

  2. B only

  3. C only

  4. A and B

  5. B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A. The particles of liquid absorb energy from the surrounding to regain the energy lost during evaporation. This absorption of energy from the surroundings makes the surroundings cold. B. Diffusion takes place through the haphazard and random way. C. The process of cooling glass is known as annealing.

Multiple choice

Assertion (A): Water droplets on the outer surface of a glass body containing ice-cold water. Reason (R): The water vapour present in air, on coming in contact with the cold glass of water, loses energy and gets converted to liquid state, which we see as water droplets.

  1. A is true and R is the correct explanation of A

  2. A is false and R is the correct explanation of A

  3. A is true and R is not the correct explanation of A

  4. All of the above

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The water vapour present in air, on coming in contact with the cold glass of water, loses energy and gets converted to liquid state, which we see as water droplets. Hence, A is true and R is the correct explanation of A.