Kinetic Theory of Gases (KVPY Stream-SA (Class 11) Physics): Questions 5 - 9 of 13

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Question number: 5

» Kinetic Theory of Gases » Kinetic Theory of Gases

MCQ▾

Question

An ideal gas filled in a cylinder occupies volume V. The gas is compressed isothermally to the volume V4 . Now the cylinder valve is opened and the gas is allowed to leak keeping temperature same. What percentage of the number of molecules escapes to bring the pressure in the cylinder back to its original value?

Choices

Choice (4) Response
a.

30%

b.

60%

c.

40%

d.

50%

Question number: 6

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

A balloon contains 350 m3 of He at 330 C and 1.5 atmosphere pressure. The volume of He at -40 C and 1 atmosphere pressure will be,

Choices

Choice (4) Response
a.

400m3

b.

350.6m3

c.

461.5m3

d.

673.42m3

Question number: 7

» Kinetic Theory of Gases » Equation of State of a Perfect Gas

MCQ▾

Question

The number of air molecules in a (15m × 15m × 14m) room at standard temperature and pressure is of the order of,

Choices

Choice (4) Response
a.

9.73 × 1027

b.

8.36 × 1028

c.

9.73 × 1028

d.

6.34 × 1023

Question number: 8

» Kinetic Theory of Gases » Work Done on Compressing a Gas

MCQ▾

Question

One jar contains gas-1 while the other gas-2. The density of gas 1 in the jar of is three times that of nitrogen. When both the gasses in the two jars are mixed, comparer their rates of diffusion,

Choices

Choice (4) Response
a.

12

b.

13

c.

23

d.

13

Question number: 9

» Kinetic Theory of Gases » Law of Equipartition of Energy

Appeared in Year: 2015

MCQ▾

Question

Methane is greenhouse gas because

Choices

Choice (4) Response
a.

it absorbs longer wavelengths of the electromagnetic spectrum while transmitting shorter wavelengths.

b.

it transmits all wavelengths of the electromagnetic spectrum

c.

it absorbs all wavelengths of the electromagnetic spectrum

d.

it absorbs shorter wavelengths of the electromagnetic spectrum while transmitting longer wavelengths

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