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1
MHT CET 2020 19th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is least reactive towards $\mathrm{S}_{\mathrm{N}} 1$ reactions?

A
$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{Br}$
B
$\mathrm{CH}_3-\mathrm{CH}(\mathrm{Br})-\mathrm{CH}_3$
C
$\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Br}$
D
$\mathrm{CH}_3-\mathrm{Br}$
2
MHT CET 2020 19th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the name of reaction involving replacement of diazonium group by chloride using cuprous (I) salt ?

A
Wolff -Kishner reduction
B
Sandmeyer's reaction
C
Balz Schiemann reaction
D
Friedel Craft's reaction
3
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following pairs of aryl halides cannot be prepared directly by electrophilic substitution?

A
Aryl chloride and aryl bromide
B
Aryl fluoride and aryl chloride
C
Aryl bromide and aryl iodide
D
Aryl iodide and aryl fluoride
4
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is correct order of $$C-X$$ bond strength in $$\mathrm{CH}_3-X$$ ?

A
$$\mathrm{CH}_3 \mathrm{F}>\mathrm{CH}_3 \mathrm{Cl}>\mathrm{CH}_3 \mathrm{Br}>\mathrm{CH}_3 \mathrm{I}$$
B
$$\mathrm{CH}_3 \mathrm{Cl}>\mathrm{CH}_3 \mathrm{Br}>\mathrm{CH}_3 \mathrm{l}>\mathrm{CH}_3 \mathrm{~F}$$
C
$$\mathrm{CH}_3 \mathrm{I}>\mathrm{CH}_3 \mathrm{Br}>\mathrm{CH}_3 \mathrm{Cl}>\mathrm{CH}_3 \mathrm{~F}$$
D
$$\mathrm{CH}_3 \mathrm{F}>\mathrm{CH}_3 \mathrm{Br}>\mathrm{CH}_3 \mathrm{Cl}>\mathrm{CH}_3 \mathrm{I}$$
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