MEDIUM

JEE Main

IMPORTANT

Earn 100

The magnitude of work done by a gas that undergoes a reversible expansion along the path $A B C$ shown in the figure is _________.

20% studentsanswered this correctly

Important Questions on Thermodynamics

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>JEE Main - 8th April 2019 Shift 2>Q 21

5

moles of an ideal gas at

100 K

are allowed to undergo reversible compression till its temperature becomes

200 K .

C_{V} = 28 J K^{- 1},

calculate

∆ U

and

∆ p V

for the process.

(R = 8.0 J K^{- 1} m o l^{- 1})

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>JEE Main - 8th April 2019 Shift 1>Q 22

For silver,

C_{p} (J K^{- 1} m o l^{- 1}) = 23 + 0.01 T .

If the temperature

(T)

3

moles of silver is raised from

300 K t o 1000 K a t 1 a t m

pressure, the value of

Δ H

will be close to:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>JEE Main - 8th April 2019 Shift 1>Q 23

Which one of the following equations does not correctly represent the first law of thermodynamics for the given processes involving an ideal gas? (Assume non- expansion work is zero)

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>JEE Main - 8th April 2018>Q 24

The combustion of benzene

(l)

gives

{CO}_{2} (g)

and

H_{2} O (l) .

Given that heat of combustion of benzene at constant volume is

- 3263 .9 kJ {mol}^{- 1}

25 ° C;

the heat of combustion

(in kJ {mol}^{- 1})

of benzene at constant pressure will be

(R = 8 .314 {JK}^{- 1} {mol}^{- 1})

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>JEE Main - 8th April 2017>Q 25

The enthalpy change on freezing of

1 mol

of water at

5 ° C

to ice at

- 5 ° C

is:

(Given

Δ_{fus} H = 6 kJ {mol}^{- 1}

0 ° C,

C_{p} (H_{2} O, l) = 75 .3 J {mol}^{- 1} K^{- 1}

C_{p} (H_{2} O, s) = 36 .8 J {mol}^{- 1} K^{- 1}

)

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>JEE Main - 8th April 2017>Q 26

For a reaction,

A (g) \to A (l); ΔH = - 3 RT .

The correct statement for the reaction is

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>JEE Main - 7th January 2020 Shift 2>Q 27

The standard heat of formation $(∆_{f} H_{298}^{0})$ of ethane is $- \frac{x}{10} kJ / mol$ , if the heat of combustion of ethane, hydrogen and graphite are $- 1560, - 393.5$ and $- 286 k J / m o l$ , respectively. The value of $x$ to the nearest integer is_____

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>JEE Main - 7th January 2020 Shift 1>Q 28

For the reaction;

A (l) \to 2 B (g)

Δ U = 2.1 k c a l, Δ S = 20 c a l K^{- 1}

300 K .

Hence

Δ G

k c a l

is _____________.

The magnitude of work done by a gas that undergoes a reversible expansion along the path ABC shown in the figure is _________.

Important Questions on Thermodynamics

Learn and Prepare for any exam you want !

The magnitude of work done by a gas that undergoes a reversible expansion along the path $A B C$ shown in the figure is _________.