Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 12 - Thermodynamics>Exercise>Q 3

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A gaseous mixture consists of 16 g of helium and 16 g of oxygen. The ratio $\frac{C_{P}}{C_{V}}$ of the mixture is

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Important Questions on Thermodynamics

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 12 - Thermodynamics>Exercise>Q 4

One mole of an ideal monatomic gas at temperature

T_{0}

expands slowly according to the law

P = k V

(

k

is constant). If the final temperature is

4 T_{0}

then heat supplied to gas is

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 12 - Thermodynamics>Exercise>Q 5

If one mole of a monoatomic gas

(γ = 5/3)

is mixed with one mole of a diatomic gas

(γ = 7/5)

, the value of

γ

for the mixture is

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 12 - Thermodynamics>Exercise>Q 6

If

C_{P}

and

C_{V}

denote the specific heats of nitrogen per unit mass at constant pressure and constant volume respectively, then

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 12 - Thermodynamics>Exercise>Q 7

For a gas

\frac{R}{C_{v}} = 0.4,

where

R

is the universal gas constant and

C_{v}

is the molar specific heat at constant volume. The gas is made up of molecules which are

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 12 - Thermodynamics>Exercise>Q 8

If a quantity of heat

1163.4 J

is supplied to one mole of nitrogen gas, at room temperature at constant pressure, then the rise in temperature is (Given

R = 8.31 J {mole}^{- 1} K^{- 1}

)

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 12 - Thermodynamics>Exercise>Q 1

A container of

5 litre

has gas at a pressure of

0.8 m

column of

Hg

. This is joined to an evacuated container of

3 litre

capacity. The resulting pressure as height of the

Hg

column (at constant temperature) will be:

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 12 - Thermodynamics>Exercise>Q 2

Find the percentage decrease in the volume if the pressure of an ideal gas is increased by

60 %

at constant temperature.

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 12 - Thermodynamics>Exercise>Q 3

$P - T$ graph for same amount of an ideal gas is allowed to expand as shown in the figure below. Then which of the following is right?

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