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

Which of the following mixtures is/are heterogeneous?

  1. Mixture of alcohol and water

  2. Blood

  3. Sand

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

Mixture of alcohol + water and blood are homogeneous mixtures, i.e. the mixtures which have uniform composition and properties throughout. Sand is an example of a heterogeneous mixture. A heterogeneous mixture is made of different substances that remain physically separate. Heterogeneous mixtures always have more than one phase.

Multiple choice

Directions: Read the given scenario carefully and answer the question that follows. Preeti fills up her plastic bottle with hot water, but then she puts it in the sink beneath cold running water. Suddenly the bottle contracts and gets mangled.

Which of the following options best describe what happened to the bottle?

  1. The heat of the boiling water changed its shape.

  2. The boiling water contains hot gases that react with the plastic.

  3. The change in temperatures causes it to get mangled.

  4. The air outside exerts pressure on the bottle.

  5. The cold air outside pushes the hot water inside.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct. As water is poured over the bottle, some steam in the bottle condenses into water, reducing the amount of air inside. The pressure of air inside the bottle decreases than the pressure exerted by the air from outside the bottle. As a result the bottle contracts and gets mangled, bottle gets compressed.This activity again confirms that the air outside exerts pressure on the bottle.

Multiple choice

Directions: In the question given below, the first and sixth sentence are given in the beginning as S1 and S6. The middle four sentences have been jumbled up. These are labelled as P, Q, R and S. You are required to find out the proper sequence of the four sentences and mark it as your answer.

S1 : What soda-water is composed of you may see for yourself if you watch your glass as it stands on the table after you have slaked your first thirst. S6 : 'Carbonic acid' is the old name for it, but it is more correct to name it, when it is out of the water, 'Carbon dioxide'. P : The liquid is plain water, as you will find out if you are too slow about drinking. Q : You will see that it is separating into two different things, a liquid and a gas. R : The gas is so heavy that you can fairly drink it from the glass, and it has, as you know, a tingle-tangle taste. S : The other is a heavy, sour and invisible gas that slips up through the water in little bubbles and collects in the empty half of the glass.

  1. QRSP

  2. PRQS

  3. QPSR

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

What soda-water is composed of you may see for yourself if you watch your glass as it stands on the table after you have slaked your first thirst. (Q) You will see that it is separating into two different things, a liquid and a gas. (P) The liquid is plain water as you will find out if you are too slow about drinking. (S) The other is a heavy, sour and invisible gas that slips up through the water in little bubbles and collects in the empty half of the glass. (R) The gas is so heavy that you can fairly drink it from the glass, and it has, as you know, a tingle-tangle taste.

Multiple choice

Water, milk, kerosene, etc. are liquids having various characteristics. Which of the following is not a characteristic of liquids?

  1. Liquids cannot be compressed much.

  2. Liquids have moderate to high densities.

  3. Liquids have a fixed volume and fixed shape.

  4. Liquids generally flow easily.

  5. Liquids do not fill their container completely.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option as this is not a characteristic of liquids. Liquids do have a fixed volume, but they do not have a fixed shape.

Multiple choice

Which of the following statement is/are false?

a. The latent heat has to be always supplied to change the state of the matter. b. Higher the melting point of a solid substance, lesser will be the force of attraction between its particles. c. The heat required to convert a liquid into the vapour state is called latent heat of vapourisation.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

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

This is the correct option as this statement is false. Higher the melting point of a solid substance, greater will be the force of attraction between its particles.

Multiple choice

Match the following:

 
Name of liquid Boiling point
a. Alcohol 1. 100 degree Celcius
b. Water 2. 357 degree Celcius
c. Mercury 3. 78 degree Celsius

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

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

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

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

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

This is the correct option. The boiling point of alcohol is 78 degree Celsius. The boiling point of water is 100 degree Celcius. The boiling point of mercury is 357 degree Celcius.