# Kinetic Theory of Gases-Kinetic Energy and Temperature (NEET (NTA)-National Eligibility cum Entrance Test (Medical) 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 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)

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

(3) No molecule can have speed greater than

(4) No molecule can have speed less than

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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