Chemical Thermodynamics (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Chemistry): Questions 1 - 5 of 23

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Question number: 1

» Chemical Thermodynamics » Second Law of Thermodynamics

Appeared in Year: 2014

MCQ▾

Question

The latent heat melting of ice at 0°C is 6KJmol1 the entropy change during the melting in JK1mol1 is closest to

Choices

Choice (4) Response

a.

11

b.

- 22

c.

22

d.

- 11

Question number: 2

» Chemical Thermodynamics » First Law of Thermodynamics » Heat Internal Energy

Appeared in Year: 2013

MCQ▾

Question

For the isothermal reversible explanation of an ideal gap:

Choices

Choice (4) Response

a.

H=0andU>0

b.

H>0andU=0

c.

H=0andU=0

d.

H>0andU<0

Question number: 3

» Chemical Thermodynamics » Second Law of Thermodynamics » Introduction

Appeared in Year: 2013

MCQ▾

Question

The entropy change in the isothermal reversible lypansion of 2 moles of an ideal gap from 10Lto100L at 300K is:

Choices

Choice (4) Response

a.

32.3Jk1

b.

38.3Jk1

c.

42.3Jk1

d.

35.8Jk1

Question number: 4

» Chemical Thermodynamics » Second Law of Thermodynamics

MCQ▾

Question

When 100 g of water is reversibly heated from 50to75 at 1 atm, the change in entropy J/K of the universe is:

Choices

Choice (4) Response

a.

0.31

b.

0

c.

– 0.31

d.

3.1

Question number: 5

» Chemical Thermodynamics » Second Law of Thermodynamics

MCQ▾

Question

If 900Jg1 of heat is exchanged at boiling point of water, then what is increase in entropy?

Choices

Choice (4) Response

a.

900JK1mol1

b.

0JK1mol1

c.

43.4JK1mol1

d.

87.2JK1mol1

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