Kinetic Theory of Gases-Kinetic Energy and Temperature (NEET Physics): Questions 13 - 16 of 30

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Question number: 13

» 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: 14

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

Let Equation 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) Equation

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

(3) No molecule can have speed greater than Equation

(4) No molecule can have speed less than Equation

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: 15

» 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

Question number: 16

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

Which of the following statements is true?

Choices

Choice (4) Response

a.

The root mean square speed of the molecules of different ideal gases, maintained at the same temperature are the same

b.

Given sample of 1 cc of hydrogen and 1 cc of oxygen both at NTP; oxygen sample has a large number of molecules

c.

Two different gases at the same temperature and pressure have equal root mean square velocities.

d.

Absolute zero temperature is not zero energy temperature

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