Ideal gas Real gas (Module-3)

The perfect example of an ideal gas is -------

• a. air

• b. hydrogen

• c. water vapour

• d. none of the above

What is an ideal gas?

• a. which obeys the law pv = RT

• b. which obeys the law p = vR / T

• c. which obeys the law pv = R / T

• d. none of the above

The sum of partial volumes of all gases in a mixture is equal to

• a. less than the total volume of the mixture

• b. the total volume of the mixture

•  c.more than the total volume of the mixture

• d. cannot predict

What is the partial volume of a gas in a mixture?

• a. volume occupied by a single gas alone of a mixture at the same temperature and pressure of the mixture

• b. total volume of the mixture at a certain pressure and temperature divided number of gases mixed in the mixture

• c. both a. and b.

• d. none of the above

Dalton's law of partial pressure states that

• a. the total pressure of a mixture of ideal gases is equal to the sum of the partial pressures of individual gases divided by number of gases mixed

• b. the total pressure of a mixture of ideal gases is equal to the partial pressure of any individual gas in the mixture

• c. the total pressure of a mixture of ideal gases is equal to the sum of the partial pressures of individual gases

• d. none of the above

What is reduced property of a substance?

• a. critical property of a substance minus existing property of the same substance

• b. existing property of a substance minus critical property of the same substance

• c. ratio of critical property to existing property of the same substance

• d. ratio of existing property to critical property of the same substance

 In high pressure condition, the real gases conform more closely with

• a. van der Waals equation

• b. ideal gas equation

• c. both a. and b

• d. none of the above

 In a mixture of ideal gases of volume V and temperature T, what is the pressure exerted by each individual gas if it occupies the total volume V alone at temperature T called?

• a. individual pressure

• b. divided pressure

• c. partial pressure

• d. total pressure

PV/nRT is know as

• a.  Compressibility factor

• b.  Pressure facror

• c.   Volume facor

• d.  All of the above

The numerical value of C_p – C_v is equal to ----

• a.     R

• b.     R/M

• c.      M

• d.None of the above