Multiple Choice Questions
Multiple Choice Questions
Q.1. In which state of matter, process of diffusion is fastest:
(a) Liquids
(b) Gases
(c) Solids
(d) Semi-solids
Q.2. Evaporation is called as :
(a) Surface phenomenon
(b) Bulk phenomenon
(c) Both surface and bulk phenomenon
(d) Unique phenomenon
Q.3. During evaporation process, the heat is :
(a) Absorbed
(b) Evolved
(c) First absorbed then evolved
(d) Initially evolved and then absorbed
Q.4. Boiling process is a:
(a) Surface phenomenon
(b) Bulk phenomenon
(c) Both surface and bulk phenomenon
(d) Rare phenomenon
Q.5. The state of matter which is found to be more stable at lower temperature :
(a) Solid
(b) Liquid
(c) Gas
(d) BEC
Q.6. The gases can be liquefied by :
(a) Lowering temperature and pressure
(b) Raising temperature and pressure
(c) Lowering temperature and raising pressure
(d) Lowering pressure only
Q.7. Intermolecular forces of attraction are least effective in :
(a) Solids
(b) Gases
(c) Liquids
(d) Plasma
Q.8. Evaporation of a liquid takes place at :
(a) A fixed temperature lower than its boiling point.
(b) A fixed temperature higher than its boiling point.
(c) A fixed temperature and pressure.
(d) All temperatures.
Q.9. When water gets solidified into ice, then heat is :
(a) Absorbed
(b) Evolved
(c) First absorbed then evolved
(d) Initially evolved and then absorbed
Q.10. Boiling of a liquid takes place at :
(a) A fixed temperature lower than its boiling point.
(b) A fixed temperature and normal atmospheric pressure.
(c) A fixed temperature higher than its boiling point.
(d) A fixed temperature and higher atmospheric pressure.
Q.11. Arrange the following in the increasing order of ‘forces of attraction’:
(a) Water, air, sugar
(b) Salt, air, juice
(c) Oxygen, water, sugar
(d) Sugar, oil, air
Q.12. Which condition out of the following increase the evaporation of water.
(a) Increase in temperature of water
(b) Increase in pressure of water
(c) Decrease in surface area of water
(d) Adding sugar to water
Q.13. The property to flow is unique to fluids. Which one of the following statements is correct?
(a) Only liquids are fluids
(b) Gases and solids behave like fluids
(c) Gases and liquids behave like fluids.
(d) Only gases behave like fluids
Q.14. What will be the correct sequence of temperature when 25°C, 46°C and 99°C are converted to kelvin scale ?
(a) 289 K, 319 K, 382 K
(b) 298 K, 391 K, 382 K
(c) 298 K, 319 K, 328 K
(d) 298 K, 319 K, 382 K
Q.15. Which is the correct statement ?
(a) conversion of solid into liquid is called sublimation.
(b) conversion of vapours into solid without passing through the liquid state is called sublimation.
(c) conversion of solid into vapours without passing through the liquid state is called vaporisation.
(d) conversion of vapours into solid without passing through the liquid state is called freezing.
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