Chemistry For Class IX (New Book ) - Chapter No. 5 - Physical States of Matter - Multiple Choice Questions And Fill In The Blanks

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Chapter No.5 - Physical States of Matter
MCQs And Fill In The Blanks
Text Book Exercise

SECTION- A: MULTIPLE CHOICE QUESTIONS
Tick Mark (✓) the correct answer

1. Which of the following gas diffuses fastest?
(a) Hydrogen ✓
(b) Chlorine
(c) Fluorine
(d) Helium

2. The vapour pressure of a liquid increases with the:
(a) increase of pressure
(b) increase of temperature ✓
(c) increase of intermolecular forces
(d) increase the polarity of molecules

3. The freezing point depends upon:
(a) Nature of liquid
(b) Pressure
(c) Temperature ✓
(d) Volume

4. One atmospheric pressure is equal to:
(a) 10325 Pascal
(b) 106075 Pascal
(c) 10523 Pascal
(d) 101325 Pascal ✓

5. Which of the following does not affect the boiling point:
(a) Intermolecular forces
(b) External pressure
(c) Initial temperature of liquid ✓
(d) Nature of liquid

6. The mobility of liquids is lesser than:
(a) Solids
(b) Gases ✓
(c) Plasma
(d) Bose Einstein Condensate

7. Which of the following have sharp melting point in solids:
(a) Plastic
(b) Rubber
(c) Glass
(d) Diamond ✓

8. Which of the following are lightest form of matter:
(a) Solid
(b) Liquid
(c) Gases
(d) Plasma ✓

9. The liquid molecules leave the surface of liquid in evaporation process because:
(a) Energy is low
(b) Energy is moderate
(c) Energy is high ✓
(d) None of these

10.The density of gases increases when its:
(a) Pressure increased ✓
(b) Temperature increased
(c) Volume increased
(d) None of these