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

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

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

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: 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

Question number: 70 (2 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

Question number: 71 (3 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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