1
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following reactions is a Wurtz - Fittig reaction?

A
$$\mathrm{C}_6 \mathrm{H}_5 \mathrm{Cl}+\mathrm{CH}_3 \mathrm{Cl}+2 \mathrm{Na} \mathrel{\mathop{\kern0pt\longrightarrow} \limits_{\mathrm{ether}}^{\mathrm{dry}}} \mathrm{C}_6 \mathrm{H}_5-\mathrm{CH}_3+2 \mathrm{NaCl}$$
B
$$\mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}+\mathrm{CH}_3 \mathrm{Cl}+2 \mathrm{Na} \mathrel{\mathop{\kern0pt\longrightarrow} \limits_{\mathrm{ether}}^{\mathrm{dry}}} \mathrm{C}_3 \mathrm{H}_8+2 \mathrm{NaCl}$$
C
$$2 \mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}+2 \mathrm{Na} \underset{\text { ether }}{\stackrel{\text { dry }}{\longrightarrow}} \mathrm{C}_2 \mathrm{H}_5-\mathrm{C}_2 \mathrm{H}_5+2 \mathrm{NaCl}$$
D
$$2 \mathrm{C}_6 \mathrm{H}_5 \mathrm{Cl}+2 \mathrm{Na} \underset{\text { ether }}{\stackrel{\text { dry }}{\longrightarrow}} \mathrm{C}_6 \mathrm{H}_5-\mathrm{C}_6 \mathrm{H}_5+2 \mathrm{NaCl}$$
2
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following noble gases reacts with fluorine to give crystalline fluorides?

A
Ne
B
He
C
Xe
D
Ar
3
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the name of following reaction.

Toluene + chromyl chloride $$\stackrel{\mathrm{CS}_2}{\longrightarrow}$$ complex $$\stackrel{\mathrm{H}_3 \mathrm{O}^{+}}{\longrightarrow}$$ Benzaldehyde

A
Stephen reaction
B
Etard reaction
C
Rosenmund reaction
D
Wolf-Kishner reaction
4
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the half-life of a first order reaction if time required to decrease concentration of reactant from 1.0 M to 0.25 M is 10 hour?

A
12 hour
B
4 hour
C
5 hour
D
10 hour
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