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

Liquid is the intermediate state between

  1. liquid and alcohol

  2. liquid and gas

  3. solid and liquid

  4. solid and gas
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are three states of matter, solid, liquid and gas. First state is solid, second state is liquid and third state is gas, so 4th option is the answer.

Multiple choice

Which is a liquid non metal?

  1. Hydrogen

  2. Sodium

  3. Bromine

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is the only non-metal element that is a liquid at room temperature.

Multiple choice

An increase in pressure causes decrease in gaseous

  1. volume

  2. temperature

  3. boiling point

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When there is increase in the pressure, the molecules of the gas comes close to each other. Or gas tries to go in the liquefied state, so there is decrease in the volume occupied by the gas, so 1st option is the answer.

Multiple choice

Oil in water is a/an

  1. homogeneous mixture

  2. heterogeneous mixture

  3. isotonic

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

Oil and water are two immiscible liquids, so they form a heterogeneous solution.

Multiple choice

The boiling point is a point at which a liquid

  1. boils

  2. freezes

  3. change its composition

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The boiling point of a liquid is the temperature at which liquids starts boiling, so 1st option is the answer.

Multiple choice

Milk and kerosene oil are

  1. miscible

  2. immiscible

  3. isochoric

  4. Isobaric

  5. none of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Milk (an emulsion) and kerosene oil do not mix to form a single homogeneous phase, making them immiscible. Miscible liquids form a uniform solution.

Multiple choice

A piece of wood floats on water. What happens to it in alcohol?

  1. Floats

  2. Oosition doesn' t change

  3. Sinks

  4. Sinks and rises
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Wood is less dense than water, allowing it to float. However, alcohol has a lower density than water, and if the wood's density is higher than that of the alcohol, it will sink.

Multiple choice

Which of the following statements is/are false? a. Water is known as the elixir of life. b. Spring water contains dissolved minerals from the surrounding rocks. c. Plenty of surface water is available in nature in wells and springs.

  1. Only a

  2. Only a and b

  3. Only c

  4. Only b and c

  5. Only b
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option. Plenty of surface water is available in nature in wells and springs, is a false statement. Plenty of surface water is available in nature in lakes, rivers and streams.

Multiple choice

Match the forms of water with their sources:

 
1. Solid a. Water vapour in atmosphere
2. Liquid b. Snow covered mountains
3. Gaseous c. Oceans

  1. 1 - b, 2 - c, 3 - a

  2. 1 - b, 2 - a, 3 - c

  3. 1 - c, 2 - b, 3 - a

  4. 1 - c, 2 - a, 3 - b

  5. 1 - a, 2 - c, 3 - b
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option. Water is available in solid form on snow covered mountains. Water is available in liquid forms in oceans. Water is available in gaseous form in the form of water vapour in the atmosphere.

Multiple choice

The critical temperature is the maximum temperature at which substance can remain as

  1. Solids

  2. Liquids

  3. Gases

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Liquids are formed when the energy (usually in the form of heat) of a system is increased and the rigid structure of the solid state is broken down. In liquids, molecules can move past one another and bump into other molecules; however, they remain relatively close to each other like solids.The highest temperature at which a substance can exist as a liquid is called its critical temperature.