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Physical Chemistry -- Gaseous State
6.
The density of nitrogen is maximum at
- A.stp
- B.273 K and 2 atm
- C.546 K and 1 atm
- D.546 K and 4 atm
- Answer
- Report
Answer : [B]
7.
A closed vessel is maintained at a constant temperature. It is first
evacuated, and then an ideal gas is introduced into it continuously. The pressure of the gas inside the vessel will
- A.remain constant
- B.first increase and then decrease
- C.first increase and then remain constant
- D.make it burst after some time
- Answer
- Report
Answer : [C]
8.
The density of a gas A is twice that of a gas B at the same temperature.
The molecular weight of gas B is thrice that of A. The ratio of the
pressures acting on A and B will be
- A.1 : 6
- B.7 : 8
- C.2 : 5
- D.1 : 4
- Answer
- Report
Answer : [A]
9.
Two vessels A and B have volumes V and 4V respectively. Both vessels
contain some water. The pressure in the space above water is p1 for vessel
A and p2 for vessel B. What will be the relation between p1 and p2?
- A.p1 = 4p2
- B.4p1 = p2
- C.p1 = p2
- D.p1 = 16p2
- Answer
- Report
Answer : [A]
10.
Air contains 23% oxygen and 77% nitrogen by weight. The percentage of O2 by volume is
- A.28.1
- B.20.7
- C.21.8
- D.23.0
- Answer
- Report
Answer : [B]
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