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$N$ moles of an ideal diatomic gas are in a closed cylinder at temperature $T$ . Suppose on supplying heat to the gas, its temperature remains constant, but $n moles$ get dissociated into atoms. Heat supplied to the gas is

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Important Questions on Thermodynamics

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Waves & Thermodynamics JEE Main & Advanced>Chapter 4 - Thermodynamics>DPP>Q 15

In a thermodynamic process, pressure of a fixed mass of a gas is changed in such a manner that the gas molecules gives out

20 J

of heat and

10 J

of work is done on the gas. If the initial internal energy of the gas was

40 J

, then the final internal energy will be _____

J

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Chapterwise/Topicwise Daily Practice Problems (DPP) Waves & Thermodynamics JEE Main & Advanced>Chapter 4 - Thermodynamics>DPP>Q 16

A perfect gas goes from state

A

to another state

B

by absorbing

8 \times 10^{5} J

of heat and doing

6.5 \times 10^{5} J

of external work. It is now transferred between the same two states in another process in which it absorbs

10^{5} J

of heat. Then in the second process work done on the gas is

a \times 10^{5}

J

. The value of

a

is _____.

EASY

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Chapterwise/Topicwise Daily Practice Problems (DPP) Waves & Thermodynamics JEE Main & Advanced>Chapter 4 - Thermodynamics>DPP>Q 17

The specific heat of a gas in an isothermal process is _____.

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Chapterwise/Topicwise Daily Practice Problems (DPP) Waves & Thermodynamics JEE Main & Advanced>Chapter 4 - Thermodynamics>DPP>Q 18

A thermally insulated container is divided into two parts by a screen. In one part, the pressure and temperature are

P

and

T

for an ideal gas filled. In the second part, it is vacuum. If now a small hole is created in the screen, then the temperature of the gas will _____.

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Waves & Thermodynamics JEE Main & Advanced>Chapter 4 - Thermodynamics>DPP>Q 19

When an ideal gas in a cylinder was compressed isothermally by a piston, the work done on the gas was found to be

1.5 \times 10^{4} J

. During this process, amount of heat flowed out from the gas is _____

\times 10^{3}

cal

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Waves & Thermodynamics JEE Main & Advanced>Chapter 4 - Thermodynamics>DPP>Q 20

In adiabatic expansion,

∆ U

is _____.

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Waves & Thermodynamics JEE Main & Advanced>Chapter 4 - Thermodynamics>DPP>Q 21

A gas at NTP is suddenly compressed to one-fourth of its original volume. If

γ

is supposed to be

\frac{3}{2},

then the final pressure is _____

atm

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Waves & Thermodynamics JEE Main & Advanced>Chapter 4 - Thermodynamics>DPP>Q 22

An ideal gas at

27 ° C

is compressed adiabatically to

\frac{8}{27}

of its original volume. If

γ = \frac{5}{3},

then the rise in temperature is _____

K

N moles of an ideal diatomic gas are in a closed cylinder at temperature T. Suppose on supplying heat to the gas, its temperature remains constant, but n moles get dissociated into atoms. Heat supplied to the gas is

Important Questions on Thermodynamics

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$N$ moles of an ideal diatomic gas are in a closed cylinder at temperature $T$ . Suppose on supplying heat to the gas, its temperature remains constant, but $n moles$ get dissociated into atoms. Heat supplied to the gas is