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A. similar charges repel each other
B. dissimilar charges attract each other
C. repulsion is the sure test of electrification
D. an electrically neutral body is repelled both positively and negatively charged bodies

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A. the electric lines of force have no physical existence
B. they expand laterally and contract longitudinally
C. they do not cross each other and group together in dielectric
D. all the above statements are true

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A. Cp of monatomic gases such as metallic vapor is about 5 kcal/kg.atom
B. The heat capacity of solid inorganic substance is exactly equal to the heat capacity of the
substance in the molten state
C. There is an increase in entropy, when a spontaneous change occurs in an isolated system
D. At absolute zero temperature, the heat capacity for many pure crystalline substances is zero

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A. A substance existing above its critical temperature is called a saturated vapor
B. A mixture of vapor gas is called saturated, if the equilibrium vapor pressure of the liquid is
more than the partial pressure of the vapor at the same temperature
C. Heat added to or given up by a substance at constant temperature is called the sensible heat
D. The end points of a vapor-pressure vs. temperature curve are critical and triple points

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