1
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

The standard heat of formation, in $\mathrm{kcal} / \mathrm{mol}$ of $\mathrm{Ba}^{2+}$ is : [Given : standard heat of formation of $\mathrm{SO}_4^{2-}$ ion $(\mathrm{aq})=-216 \mathrm{kcal} / \mathrm{mol}$, standard heat of crystallisation of $\mathrm{BaSO}_4(\mathrm{~s})=-4.5 \mathrm{kcal} / \mathrm{mol}$, standard heat of formation of $\left.\mathrm{BaSO}_4(\mathrm{~s})=-349 \mathrm{kcal} / \mathrm{mol}\right]$

A
+133.0
B
+220.5
C
$-$128.5
D
$-$133.0
2
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

$\mathrm{C}(\mathrm{s})+2 \mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{CH}_4(\mathrm{~g}) ; \Delta \mathrm{H}=-74.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Which of the following diagrams gives an accurate representation of the above reaction? [ $\mathrm{R} \rightarrow$ reactants; $\mathrm{P} \rightarrow$ products]

A
NEET 2025 Chemistry - Thermodynamics Question 1 English Option 1
B
NEET 2025 Chemistry - Thermodynamics Question 1 English Option 2
C
NEET 2025 Chemistry - Thermodynamics Question 1 English Option 3
D
NEET 2025 Chemistry - Thermodynamics Question 1 English Option 4
3
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

Choose the correct statement for the work done in the expansion and heat absorbed or released when 5 litres of an ideal gas at 10 atmospheric pressure isothermally expands into vacuum until volume is 15 litres :

A
Both the heat and work done will be greater than zero
B
Heat absorbed will be less than zero and work done will be positive
C
Work done will be zero and heat will also be zero
D
Work done will be greater than zero and heat will remain zero
4
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

For an endothermic reaction:

(A) $$\mathrm{q}_{\mathrm{p}}$$ is negative.

(B) $$\Delta_{\mathrm{r}} \mathrm{H}$$ is positive.

(C) $$\Delta_r \mathrm{H}$$ is negative.

(D) $$\mathrm{q}_{\mathrm{p}}$$ is positive.

Choose the correct answer from the options given below:

A
B and D
B
C and D
C
A and B
D
A and C
NEET Subjects
EXAM MAP