JEE Main 2024 (Online) 1st February Morning Shift | Thermodynamics Question 67 | Chemistry

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JEE Main 2024 (Online) 1st February Morning Shift

MCQ (Single Correct Answer)

-1

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

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

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

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

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

JEE Main 2024 (Online) 29th January Morning Shift

MCQ (Single Correct Answer)

-1

Which of the following is not correct?

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

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

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

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

JEE Main 2023 (Online) 13th April Evening Shift

MCQ (Single Correct Answer)

-1

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

JEE Main 2023 (Online) 13th April Evening Shift Chemistry - Thermodynamics Question 87 English

System A	System B
Temperature falls	Temperature rises

System A	System B
Temperature rises	Temperature remains same

System A	System B
Temperature falls	Temperature remains same

System A	System B
Temperature remains same	Temperature rises

JEE Main 2023 (Online) 10th April Morning Shift

MCQ (Single Correct Answer)

-1

Given

(A)	$$\mathrm{2CO(g)+O_2(g)\to 2CO_2(g)}$$		$$\mathrm{\Delta H_1^0=-x~kJ~mol^{-1}}$$
(B)	$$\mathrm{C(graphite)+O_2(g)\to CO_2(g)}$$		$$\mathrm{\Delta H_2^0=-y~kJ~mol^{-1}}$$

$$\mathrm{\Delta H^0}$$ for the reaction

$$\mathrm{C(graphite)+\frac{1}{2}O_2(g)\to CO(g)}$$ is :

$$\frac{x-2y}{2}$$

$$\frac{x+2y}{2}$$

$$2y-x$$

$$\frac{2x-y}{2}$$

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