1
KCET 2025
MCQ (Single Correct Answer)
+1
-0

Identify the incorrect statements among the following:

(a) All enthalpies of fusion are positive

(b) The magnitude of enthalpy change does not depend on the strength of the intermolecular interactions in the substance undergoing phase transformations.

(c) When a chemical reaction is reversed, the value of $\Delta \mathrm{rH}^{\circ}$ is reversed in sign.

(d) The change in enthalpy is dependent of path between initial state (reactants) and final state (products)

(e) For most of the ionic compounds, $\Delta_{\text {sol }} \mathrm{H}^{\circ}$ is negative

A
a, b and d
B
b, d and e
C
a, d and e
D
a and e only
2
KCET 2024
MCQ (Single Correct Answer)
+1
-0

From the diagram $(Z)=\frac{V_{\text {real }}}{V_{\text {ideal }}}$

KCET 2024 Chemistry - Thermodynamics Question 5 English

$\Delta_r H$ for the reaction, $C \rightarrow A$ is

A
$+35$ J
B
$-15$ J
C
$-35$ J
D
$+15$ J
3
KCET 2023
MCQ (Single Correct Answer)
+1
-0

A gas at a pressure of $$2 \mathrm{~atm}$$ is heated from $$25^{\circ} \mathrm{C}$$ to $$323^{\circ} \mathrm{C}$$ and simultaneously compressed of $$\frac{2}{3}$$rd of its original value. Then the final pressure is

A
1.33 atm
B
6 atm
C
2 atm
D
4 atm
4
KCET 2023
MCQ (Single Correct Answer)
+1
-0

Lattice enthalpy for $$\mathrm{NaCl}$$ is $$+788 \mathrm{~kJ} \mathrm{~mol}^{-1}$$ and $$\Delta H_{\text {hyd }}^{\circ}=-784 \mathrm{~kJ} \mathrm{~mol}^{-1}$$. Enthalpy of solution of $$\mathrm{NaCl}$$ is

A
$$+572 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
B
$$+4 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
C
$$-572 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
D
$$-4 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
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