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Byju's Answer
Standard XII
Chemistry
Gases in Liquids
Which of the ...
Question

Which of the following statements is false for inter-conversion of matter based on kinetic theory of gases, when solids/liquids are heated?

A
The temperature rises
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B
Particles gain energy
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C
Inter-molecular force of attraction increases
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D
Inter-molecular space between the molecules of a solid/liquid increases
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Solution

The correct option is D Inter-molecular force of attraction increases
  • On heating solids /liquids, the temperature rises.
  • Particles gain energy.
  • Inter-molecular force of attraction decreases.
  • Inter-molecular space between the molecules of a solid/liquid increases.

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Q. Which of the following statements is false for inter-conversion of matter based on kinetic theory of gases, when a gas/liquid is cooled?
Q.

What is meant by inter-molecular forces of attraction? How do they carry in solids, liquids and gases?

Q.

Fill in the blanks:

(a) Evaporation takes place at___ temperature.

(b) ___process is just the reverse of melting.

(c) ___ is a process that involves the direct conversion of a solid into its vapour on heating.

(d) The temperature at which a solid convert into a liquid is called its___

(e) The smallest unit of matter that exists freely ni nature is called___

(f) Molecules of a substance are always in a state of___ and so they possess ___

(g) Inter-molecular space is maximum in ___less in ___and the least in ___

(h) Inter-molecular force of attraction is maximum in___less in ___and the least in ___

Q. The correct relation between the intensities of inter-molecular attraction Is,Il and Ig in solids, liquids and gases respectively, is :
Q.

Select the correct alternative:

(a) The inter-molecular force is maximum in :

(i) solids (ii) gases

(iii) liquids (iv) none of the above.

(b) The inter-molecular space is maximum in :

(i) liquids (ii) solids

(iii) gases (iv) none of the above.

(c) The molecules can move freely anywhere in :

(i) gases (ii) liquids

(iii) solids (iv) none of the above

(d) The molecules move only within the boundary of :

(i) liquids (ii) gases

(iii) solids (iv) none of the above

(e) The temperature at which a liquid gets converted into its vapour state is called its :

(i) melting point (ii) boiling point

(iii) dew point (iv) freezing point

(f) Rapid conversion of water into steam is are an example of:

(i) evaporation (ii) freezing

(ii) melting (iv) vaporization

(g) Evaporation takes place from the :

(i) surface of liquid

(ii) throughout the liquid

(iii) mid-portion of the liquid

(iv) bottom of the liquid

(h) Boiling takes place from:

(i) the surface of the liquid

(ii) throughout the liquid

(iii) mid-portion of liquid

(iv) none of the above

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