Alpha Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise-1>Q 50

EASY

NEET

IMPORTANT

Earn 100

Some students find values of $C_{V}$ and $C_{P}$ for gas in $cal K^{- 1} {mol}^{- 1}$ . Which pair is most correct?

50% studentsanswered this correctly

Important Questions on Thermodynamics

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise-1>Q 51

A mixture is prepared using

1

mole of a gas

A

with

γ = \frac{7}{5}

and

1

mole of a gas

B

with

γ = \frac{5}{3}

. Find the value of

γ

for the mixture.

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise-1>Q 52

The molar heat capacity at the constant volume of oxygen gas at STP is nearly

2.5 R

. As the temperature is increased, it gradually increases and approaches

3.5 R

. The most appropriate reason for this behaviour is that at high temperatures

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise-1>Q 53

Two moles of an ideal helium gas are in a rubber balloon at

30 ° C

. The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is slowly changed to

35 ° C

. The amount of heat required in raising the temperature is nearly (take,

R = 8.31 J mol - K

)

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise-1>Q 54

The molar specific heat at constant pressure of an ideal gas is $(\frac{7}{2}) R$ . The ratio of specific heat at constant pressure to that at constant volume is

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise-1>Q 55

(a) Prove that for a monatomic gas the ratio of molar specific heat at constant pressure to molar specific heat at constant volume is

1.67 .

(b) Is it possible to boil water without heating? Explain.

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise-1>Q 56

One mole of the ideal monatomic gas

(γ = \frac{5}{3})

is mixed with one mole of diatomic gas

(γ = \frac{7}{5}) .

What is

γ

for the mixture?

γ

denotes the ratio of specific heat at constant pressure, to that at constant volume.

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise-1>Q 57

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:

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise-1>Q 58

If $Cp and Cv$ denotes the specific heats of nitrogen per unit-mass at constant pressure and constant volume respectively, then :