NEET Physics: Questions 1484 - 1489 of 2098

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Question number: 1484

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

At which of the following temperature would the molecule of a gas have triple the average kinetic energy they have at 20°C?

Choices

Choice (4) Response

a.

606° C

b.

313°C

c.

40° C

d.

80° C

Question number: 1485

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

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

Choices

Choice (4) Response

a.

1.3 ⨯ 10 2 J

b.

0.56 ⨯ 10 4 J

c.

3.4 ⨯ 10 3 J

d.

2.7 ⨯ l0 2 J

Question number: 1486

» Atoms and Nuclei » Radioactivity

MCQ▾

Question

Which of the following are modes of radioactive decay?

(1) Positron emission (2) Electron capture

(3) α -decay (4) Fusion

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

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 3 are correct

c.

1 and 2 are correct

d.

2 and 4 are correct

Question number: 1487

» Kinetic Theory of Gases » Equation of State of a Perfect Gas

MCQ▾

Question

One mole of ideal monoatomic gas (γ=53) is mixed with one mole of diatomic gas (γ=75) . What is γ mix for (γ=CpCv)

Choices

Choice (4) Response

a.

43

b.

3523

c.

2315

d.

1.5

Question number: 1488

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

To double the volume of a given mass of an ideal gas at 27ºC keeping the pressure constant, one must raise the temperature in degree centigrade to

Choices

Choice (4) Response

a.

327

b.

54

c.

270

d.

600

Question number: 1489

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

Root mean square velocity of a particle is v at pressure P. If pressure is increased two times, then the r. m. s. velocity becomes

Choices

Choice (4) Response

a.

v

b.

0.5 v

c.

3 v

d.

2 v

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