JEE Main 2024 (Online) 5th April Morning Shift | Thermodynamics Question 9 | Chemistry

1

JEE Main 2024 (Online) 5th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R)

Assertion (A) : Enthalpy of neutralisation of strong monobasic acid with strong monoacidic base is always $$-57 \mathrm{~kJ} \mathrm{~mol}^{-1}$$

Reason (R) : Enthalpy of neutralisation is the amount of heat liberated when one mole of $$\mathrm{H}^{+}$$ ions furnished by acid combine with one mole of $${ }^{-} \mathrm{OH}$$ ions furnished by base to form one mole of water.

In the light of the above statements, choose the correct answer from the options given below.

A

(A) is true but (R) is false

B

Both (A) and (R) are true and (R) is the correct explanation of (A)

C

Both (A) and (R) are true but (R) is not the correct explanation of (A)

D

(A) is false but (R) is true

2

JEE Main 2024 (Online) 1st February Morning Shift

MCQ (Single Correct Answer)

+4

-1

Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following :

A

$\mathrm{q}=0, \Delta \mathrm{T}=0, \mathrm{w}=0$

B

$\mathrm{q}=0, \Delta \mathrm{T} \neq 0, \mathrm{w}=0$

C

$\mathrm{q} \neq 0, \Delta \mathrm{T}=0, \mathrm{w}=0$

D

$\mathrm{q}=0, \Delta \mathrm{T}<0, \mathrm{w} \neq 0$

3

JEE Main 2024 (Online) 29th January Morning Shift

MCQ (Single Correct Answer)

+4

-1

Which of the following is not correct?

A

$$\Delta \mathrm{G}$$ is positive for a spontaneous reaction

B

$$\Delta \mathrm{G}$$ is positive for a non-spontaneous reaction

C

$$\Delta \mathrm{G}$$ is zero for a reversible reaction

D

$$\Delta \mathrm{G}$$ is negative for a spontaneous reaction

4

JEE Main 2023 (Online) 13th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

What happens when methane undergoes combustion in systems A and B respectively?

JEE Main 2023 (Online) 13th April Evening Shift Chemistry - Thermodynamics Question 34 English

A

System A	System B
Temperature falls	Temperature rises

B

System A	System B
Temperature rises	Temperature remains same

C

System A	System B
Temperature falls	Temperature remains same

D

System A	System B
Temperature remains same	Temperature rises