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 materials insoluble in water can_____________.

  1. only sink in water

  2. only float in water

  3. neither sink nor float in water

  4. either sink or float in water

  5. none of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The material insoluble in water would either sink or float in water. For example coin which is insoluble in water would sink in water because it is heavier than water. The wax, which does not dissolve in water would float on it as it is lighter than water.

Multiple choice

Which of the following liquids is immiscible in water?

  1. Glycerine

  2. Alcohol

  3. Mustard oil

  4. Vinegar

  5. None of these

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

The mustard oil is immiscible in water as it does not mix with water and forms a separate layer. The mustard oil floats on top of water  because it is less dense than water. 

Multiple choice

Glycerine is _________ in water.

  1. soluble

  2. insoluble

  3. miscible

  4. immiscible

  5. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The glycerine is miscible in water. The glycerine gets competely mixed in water and does not form a separate layer. The glycerine is a liquid. The liquids that get completely mixed in water are called as miscible in water.

Multiple choice

Why do you feel a cooling sensation on skin after application of balms like Vicks or Iodex?

  1. because of condensations of constituents of the balm.

  2. because of evaporation of constituents of the balm.

  3. because of liquification of constituents of the balm.

  4. because of sublimation of constituents of the balm.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The constituent of the balm evaporates and evaporation is always accompanied by the cooling of the surface from which the constituent evaporates.

Multiple choice

The melting point of a solid is same as the

  1. freezing point of the corresponding liquid.

  2. boiling point of the corresponding liquid.

  3. sublimation point of the corresponding liquid.

  4. liquification temperature of the corresponding gas.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The melting point of a solid is the same as the freezing point of the corresponding liquid.

Multiple choice

What is the impact of soluble impurities in a substance on its boiling point?

  1. It raises boiling point.

  2. It reduces boiling point.

  3. They may increase or lower the boiling point.

  4. It does not effect boiling point.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Impurities will have different effects on the boiling point. They may increase or lower the boiling point. This will depend on the type of substance and the impurities that are present.

Multiple choice

Which of the following statement is TRUE?

  1. Boiling of tap water is higher them distilled water.

  2. Boiling point of distilled water is higher than tap water.

  3. Boiling point of tap water and distilled water is same.

  4. Chemical composition of tap water and distilled water is same.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tap water contains some dissolved calcium and magnesium salts. So, the boiling point of tap water is higher than distilled water.