Kinetic Theory of Gases (NEET Physics): Questions 16 - 19 of 39

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Question number: 16

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

If pressure of a gas contained in a closed vessel is increased 0.4 % when heated by 1°C, the initial temperature must be

Choices

Choice (4) Response

a.

250°C

b.

2500 K

c.

25°C

d.

250 K

Question number: 17

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

Let V¯,VrmsandVp respectively denote the mean speed, root mean square speed and most probable speed of the molecules in an ideal monoatomic gas at absolute temperature T, the mass of a molecule is m. Then

(1) VP<V¯<Vrms

(2) The average kinetic energy of a molecule is 34mVP2 .

(3) No molecule can have speed greater than 2Vrms

(4) No molecule can have speed less than VP2

select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

2 and 4 are correct

c.

1 and 3 are correct

d.

1 and 2 are correct

Question number: 18

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

A flask is filled with 15 gm of an ideal gas at 27°C and its temperature is raised to 47°C. The mass of the gas that has to be released to maintain the temperature of the gas in the flask at 52°C and the pressure remaining the same is

Choices

Choice (4) Response

a.

1.5 g

b.

2.5 g

c.

1.0 g

d.

2.0 g

Passage

Read the passage given below and answer the questions that follows:

A diathermic piston divides adiabatic cylinder of volume V 0 into two equal parts as shown in the figure. Both parts contain ideal monoatomic gases. The initial pressure and temperature of gas in left compartment are P 0 and T 0 while that in right compartment are 2P 0 and 2T 0. Initially the piston is kept fixed and the system is allowed to acquire a state of thermal equilibrium.

Diathermic piston divides into adiabatic cylinder.

Diathermic Piston Divides Into Adiabatic Cylinder.

In above figure we show that a diathermic piston divides adiabatic cylinder of volume V0 into two equal parts

Question number: 19 (1 of 2 Based on Passage) Show Passage

» Kinetic Theory of Gases » Kinetic Theory of Gases

MCQ▾

Question

The pressure in left compartment after thermal equilibrium is achieved is

Choices

Choice (4) Response

a.

P0

b.

32P0

c.

43P0

d.

All of the above

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