NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1544 - 1548 of 2184

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Question number: 1544

» Atoms and Nuclei » Composition and Size of Nucleus

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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.

11,13, -12

d.

11,12,13

Question number: 1545

» Kinetic Theory of Gases » Kinetic Energy and Temperature

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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.

250 K

b.

25°C

c.

500 K

d.

Question does not provide sufficient data or is vague

Question number: 1546

» Kinetic Theory of Gases » Kinetic Energy and Temperature

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Assertion-Reason▾

Question

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 true but Ꭱ is NOT the correct explanation of Ꭺ

b.

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

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

Question number: 1547

» Thermodynamics » Concept of Temperature

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MCQ▾

Question

Work done by 0.2 mole of a gas at 30°C to double its volume at constant pressure is,

(R = 2 cal mol °K)

Choices

Choice (4) Response

a.

154 cal

b.

600 cal

c.

160 cal

d.

121.2 cal

Passage

Read the passage given below and answer the questions that follows:

V-T graph of a process of monoatomic ideal gas is as shown in figure.

Graph of volume vs pressure square depicts ABCD

Graph of Volume vs Pressure Square Depicts ABCD

In above figure expansion of monoatomic molecule is shown.

Question number: 1548 (1 of 3 Based on Passage) Show Passage

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

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MCQ▾

Question

Sum of work done by the gas in process ABCD is –

Choices

Choice (4) Response

a.

zero

b.

data is insufficient

c.

negative

d.

positive