Kinetic Theory of Gases-Kinetic Energy and Temperature (NEET Physics): Questions 17 - 21 of 29

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Question number: 17

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

In the two vessels of same volume, atomic hydrogen and helium at pressure 1 atm and 2 atm are filled. If temperature of both the samples is same, then average speed of hydrogen atoms < C H > will be related to that of helium < C He > as,

Choices

Choice (4) Response
a. <CH>=2<CHe>
b.

<CH>=2<CHe>

c.

<CH>=<CHe>

d.

<CH>=<CHe>2

Question number: 18

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

For a gas at a temperature T the root-mean-square velocity V r. m. s, the most probable speed V mp, and the average speed V av obey the relationship

Choices

Choice (4) Response
a.

vrms>vav>vmp

b.

vmp>vav>vrms

c.

vmp>vav>vrms

d.

vav>vrms>vmp

Question number: 19

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

The kinetic energy of one gram molecule of a gas at 70 0 C temperature and normal pressure is (R = 8.31 J/mole- K)

Choices

Choice (4) Response
a.

1.3×102J

b.

0.56×104J

c.

4.3×103J

d.

3.4×103J

Question number: 20

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

If pressure of a gas contained in a closed vessel is increased 0.2 % when heated by 1°C, the initial temperature must be

Choices

Choice (4) Response
a.

25°C

b.

250 K

c.

500 K

d. None of the above

Question number: 21

» Kinetic Theory of Gases » Kinetic Energy and Temperature

Assertion-Reason▾

Assertion (Ꭺ)

Equal masses of helium and oxygen gases are given equal quantities of heat. There will be a greater rise in the temperature of helium compared to that of oxygen.

Reason (Ꭱ)

The molecular weight of oxygen is more than the molecular weight of helium.

Choices

Choice (4) Response
a. Both Ꭺ and Ꭱ are false
b. Ꭺ is true but Ꭱ is false
c. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
d. Ꭺ is false but Ꭱ is true

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