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Objective Questions
GS
GS Set-1
Chemistry
Physical Chemistry
167

Physical Chemistry MCQ with Answers

167) 1 mol each of a monoatmoic, diatomic and triatomic gases are mixed. C_p⁄C_v for the mixture is:

1.4

1.428

1.67

None of these

Answer is:

1.428

Physical Chemistry MCQ with Answers

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Related Physical Chemistry MCQ with Answers

168) An LPG cylinder contains 15 kg of butane gas at 27^oC and 10 atm pressure. It was leaking and its pressure fell down to 8 atm after 1 day. The gas leaked in 5 days is:

10 kg

3 kg

15 kg

12 kg

Answer is:

15 kg

Explanation:

P1⁄P2 = w1⁄w2

169) Oxygen gas is collected by downward displacement of water in a jar. The level of water inside the jar is adjusted to the height of water outside the jar. When the adjustment is made, the pressure exerted by oxygen is equal to:

Atmospheric pressure

Vapour pressure of oxygen at that temperature

Atmospheric pressure plus aqueous tension at that temperature

Atmospheric pressure minus aqueous tension at that temperature

Answer is:

Atmospheric pressure minus aqueous tension at that temperature

Explanation:

P (dry O₂) + P (water vapour) = P (wet O₂)

170) The temperature at which the second virial coefficient of a real gas is zero is called:

Critical temperature

Eutectic point

Boiling point

Boyle′s temperature

Answer is:

Boyle′s temperature

171) The inversion temperature (T_i) for a gas is given by:

a⁄Rb

2a⁄Rb

Rb⁄a

2Rb⁄a

Answer is:

a⁄Rb

Physical Chemistry MCQ with Answers

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