1
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Observe the following reactions. I. $\mathrm{CaCO}_3(\mathrm{~s}) \longrightarrow \mathrm{CaO}(\mathrm{s})+\mathrm{CO}_2(\mathrm{~g})$ II. $\mathrm{Cl}_2(\mathrm{~g}) \longrightarrow 2 \mathrm{Cl}(\mathrm{g})$ III. $\mathrm{H}_2 \mathrm{O}(l) \longrightarrow \mathrm{H}_2 \mathrm{O}(s)$ Identify the reaction in which entropy increases
A
I, I, III
B
I, II only
C
I, III only
D
II, III only
2
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
At $300 \mathrm{~K}, K_C$ for the reaction. $$ A_2 B_2(g) \rightleftharpoons A_2(g)+B_2(g) $$ is $100 \mathrm{~mol} \mathrm{~L}^{-1}$, What is its $K_p$ (in atm ) at the same temperature ? $\left(R=0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\right)$
A
100
B
2460
C
4.06
D
246
3
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
At $27^{\circ} \mathrm{C}$, the degree of dissociation of $\mathrm{H} A$ (weak acid) in 0.5 M of its solution is $1 \%$. The concentrations of $\mathrm{H}_3 \mathrm{O}^{+}, A^{-}$and $\mathrm{H} A$ at equilibrium (in $\mathrm{mol} \mathrm{L}^{-1}$ ) are respectively.
A
$0.005,0.005,0.495$
B
$0.05,0.05,0.45$
C
$0.01,0.01,0.49$
D
$0.005,0.495,0.005$
4
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following sets are correctly matched?

(i) $\mathrm{B}_2 \mathrm{H}_6$ - electron deficient hydride

(ii) $\mathrm{NH}_3$ - electron precise hydride

(iii) $\mathrm{H}_2 \mathrm{O}$ - electron rich hydride

A
i,iii only
B
i, ii, iii
C
ii, iii, only
D
i, ii, only
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