NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1541 - 1545 of 2142

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Question number: 1541

» Atoms and Nuclei » Radioactivity

Assertion-Reason▾

Assertion (Ꭺ)

The mass of β -particles when they are emitted is higher than the mass of electrons obtained by other means.

Reason (Ꭱ)

β -particle and electron, both are similar particles.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are false

Question number: 1542

» 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.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 1543

» Atoms and Nuclei » Composition and Size of Nucleus

MCQ▾

Question

How many electrons, protons, and neutrons are there in a nucleus of atomic number 11 and mass number 24?

Choices

Choice (4) Response

a.

12, 11, 13

b.

11, 11, 13

c.

11, 12, 13

d.

11, 13, -12

Question number: 1544

» 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: 1545

» 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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