10th Class Physics Chapter 2 Test11. Thermal expansion and change of state

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. When ice melts, the energy supplied:
   1. Raises the temperature of ice
   2. Breaks intermolecular forces without raising temperature
   3. Increases density only
   4. None of these
2. Evaporation uses:
   1. Continuous external heat source
   2. Surrounding energy
   3. High pressure
   4. Only at boiling point
3. When volume of container increases at constant temperature, gas pressure:
   1. Increases
   2. Decreases
   3. Becomes zero
   4. Doubles
4. Which of the following factors increases the rate of evaporation?
   1. Decrease in temperature
   2. Increase in humidity
   3. Increase in wind speed
   4. Decrease in surface area
5. Evaporation is the process in which:
   1. Liquid changes to solid
   2. Liquid changes into vapors
   3. Liquid boils throughout its mass
   4. Gas condenses into liquid
6. If volume of gas is reduced while temperature is constant, pressure will:
   1. Increase
   2. Decrease
   3. Remain unchanged
   4. Stop
7. The latent heat of vaporization is the heat required to:
   1. Convert solid into liquid
   2. Convert liquid into gas
   3. Increase temperature of gas
   4. Convert liquid into solid
8. A bimetallic strip bends on heating because:
   1. Both metals expand equally
   2. Both metals contract
   3. Metals have different coefficients of expansion
   4. Metals have the same density
9. Liquids have density that is:
   1. Greater than solids
   2. Smaller than solids but higher than gases
   3. Equal to gases
   4. Zero
10. In gases, the attractive force between particles is:
    1. Very strong
    2. Negligible
    3. Moderate
    4. Stronger than liquids