Thermodynamics (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 66 - 71 of 86

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Question number: 66

» Thermodynamics » Concept of Temperature

MCQ▾

Question

How much work to be done in decreasing the volume of and ideal gas by an amount of 1.4 × 10 -4 m 3 at normal temperature and constant normal pressure of 1 × 10 -5N/ m 2

Choices

Choice (4) Response

a.

14 Joule

b.

28 Joule

c.

25 Joule

d.

27 Joule

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Question number: 67

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

A monoatomic ideal gas, initially at temperature T 1 is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature T 2 by releasing the piston suddenly. If I 1 and I 2 are the lengths of the gas column before and after expansion respectively, then Equation is given by

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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Question number: 68

» Thermodynamics » Concept of Temperature

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.

600 cal

b.

154 cal

c.

121.2 cal

d.

160 cal

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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.

Question number: 69 (1 of 3 Based on Passage) Show Passage

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

Question

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

Choices

Choice (4) Response

a.

negative

b.

data is insufficient

c.

zero

d.

positive

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Question number: 70 (2 of 3 Based on Passage) Show Passage

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

Question

Change in internal energy of the gas is zero in process (s) –

Choices

Choice (4) Response

a.

DA and BC only

b.

DA, AB and BC

c.

DA only

d.

DA and AB only

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Question number: 71 (3 of 3 Based on Passage) Show Passage

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

Question

Heat is supplied to the gas in process (s) -

Choices

Choice (4) Response

a.

DA, AB and DC

b.

AB and BC only

c.

DA only

d.

DA and AB only

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