Kinetic Theory of Gases (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics): Questions 1 - 4 of 13

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Question number: 1

» Kinetic Theory of Gases » Kinetic Energy and Temperature

Appeared in Year: 2011

MCQ▾

Question

In a thermally isolated system, two boxes filled with an ideal gas are connected by a valve. When the valve is in closed position, states of the box 1 and 2, respectively, are (1 atm, V, T) and (0.5 atm, 4V, T). When the valve is opened, the final pressure of the system is approximately

Choices

Choice (4) Response

a.

0.75 atm

b.

0.6 atm

c.

0.5 atm

d.

1.0 atm

Question number: 2

» Kinetic Theory of Gases » Kinetic Theory of Gases

Appeared in Year: 2011

MCQ▾

Question

The number of air molecules in a (5m × 5m × 4m) room at standard temperature and pressure is of the order of

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 3

» Kinetic Theory of Gases » Kinetic Theory of Gases

Appeared in Year: 2011

MCQ▾

Question

We sit in the room with windows open. Then

Choices

Choice (4) Response

a.

Air pressure on the floor of the room equals the atmospheric pressure but the air pressure on the ceiling is negligible

b.

Air pressure on the floor equals the weight of the air column inside the room (from floor to ceiling) per unit area

c.

Air pressure is nearly the same on the floor, the walls and the ceiling

d.

Air pressure on the walls is zero since the weight of air acts downward

Question number: 4

» Kinetic Theory of Gases » Kinetic Theory of Gases

Appeared in Year: 2013

MCQ▾

Question

An ideal gas filled in a cylinder occupies volume V. The gas is compressed isothermally to the volume Equation . 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.

0.33%

b.

0.66%

c.

33%

d.

66%

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