1
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate standard internal energy change for $\mathrm{OF}_{2(\mathrm{~g})}+\mathrm{H}_2 \mathrm{O}_{(\mathrm{g})} \longrightarrow 2 \mathrm{HF}_{(\mathrm{g})}+\mathrm{O}_{2(\mathrm{~g})}$ at 300 K , if $\Delta_{\mathrm{f}} \mathrm{H}^{\circ}$ of $\mathrm{OF}_{2(\mathrm{~g})}, \mathrm{H}_2 \mathrm{O}_{(\mathrm{g})}$ and $\mathrm{HF}_{(\mathrm{g})}$ are 20, -250 and $-270 \quad \mathrm{~kJ} \mathrm{~mol}^{-1}$ respectively. $\left[\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right]$

A
$\mathrm{-307.50 ~kJ}$
B
$-342.48 \mathrm{~kJ}$
C
$-412.00 \mathrm{~kJ}$
D
$\mathrm{-214.48 ~kJ}$
2
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following compounds is obtained by using Finkelstein reaction?

A
Alkyl fluorides
B
Alkyl chlorides
C
Alkyl bromides
D
Alkyl iodides
3
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a first order reaction $60 \%$ of the reactant converts into product in 45 minute. Calculate rate constant of the reaction.

A
0.0102 minute $^{-1}$
B
0.0204 minute$^{-1}$
C
0.0306 minute $^{-1}$
D
0.0408 minute ${ }^{-1}$
4
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify a compound having properties of tear gas.

A
$\mathrm{SOCl}_2$
B
$\mathrm{COCl}_2$
C
$\mathrm{Cl}\left(\mathrm{CH}_2\right)_2 \mathrm{~S}\left(\mathrm{CH}_2\right)_2 \mathrm{Cl}$
D
$\mathrm{CCl}_3 \mathrm{NO}_2$
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