Beta Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>EXERCISE-2>Q 7

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$q, w, ∆ E$ and $∆ H$ for the following process $ABCD$ on a monoatomic gas are:

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Important Questions on Thermodynamics

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Beta Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>EXERCISE-2>Q 8

One mole of a real gas is subjected to heating at constant volume from

(P_{1}, V_{1}, T_{1})

state to

(P_{2}, V_{1}, T_{2})

state. Then it is subjected to irrerversible adiabatic compression against constant external pressure

P_{3} atm

till system reaches final state

(P_{3}, V_{2}, T_{3})

. If the constant volume molar heat capacity of real gas is

C_{V}

. Find out correct expression for

∆ H

from state

1

to state

3

.

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Beta Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>EXERCISE-2>Q 9

The maximum efficiency of a steam engine operating between

100 ° C

and

25 ° C

is:

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Beta Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>EXERCISE-2>Q 10

For the which of the following reactions.

∆ S

will the maximum:

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Beta Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>EXERCISE-2>Q 11

The entropy change when two moles of ideal monoatomic gas is heated from

200

to

300 ° C

reversibly and isochorically?

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Beta Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>EXERCISE-2>Q 12

When two equal sized pieces of the same metal at different temperatures

T_{h}

(hot piece) and

T_{c}

(cold piece) are brought into contact into thermal contact and isolated from its surrounding. The total change in entropy of system is given by?

[C_{v} (J / K) = heat capacity of metal]

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Beta Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>EXERCISE-2>Q 13

What can be concluded about the value of $∆ H$ and $∆ S$ from this graph?

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Beta Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>EXERCISE-2>Q 14

For which of the following processes, total entropy of universe increases.

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Beta Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>EXERCISE-2>Q 15

1

mole of an ideal gas at

25 ° C

is subjected to expand reversibly ten times of its initial volume. The change in entropy due to expansion is: