For the following reactions: a. CH 3 CH 2 CH 2 Br + KOH → CH 3 CH = CH 2 + KBr + H 2 O b. c. Which of the…

For the following reactions:
a. ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Br} + \mathrm{KOH}\to {\mathrm{CH}}_3\mathrm{CH}={\mathrm{CH}}_2+ \mathrm{KBr}+ {\mathrm{H}}_2\mathrm{O}$ 
b.

c.

Which of the following statements is correct?

1. a and b are elimination reactions and c is addition reaction.
2. a is elimination, b is substitution and c is addition reaction.
3. a is elimination, b and c are substitution reactions.
4. a is substitution, b and c are addition reactions.

Solution

a] $\begin{array}{ccc}\mathrm{C}{\mathrm{H}}_3\mathrm{C}{\mathrm{H}}_2\mathrm{C}{\mathrm{H}}_2\mathrm{B}\mathrm{r}& +alc. & \mathrm{K}\mathrm{O}\mathrm{H}\\ \left(\mathrm{E}\mathrm{l}\mathrm{i}\mathrm{m}\mathrm{i}\mathrm{n}\mathrm{a}\mathrm{t}\mathrm{i}\mathrm{o}\mathrm{n}\right)& & \end{array}\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{ }\begin{array}{cc}\to & \mathrm{C}{\mathrm{H}}_3\mathrm{C}\mathrm{H}=\mathrm{C}{\mathrm{H}}_2+\mathrm{K}\mathrm{B}\mathrm{r}+{\mathrm{H}}_2\mathrm{O}\\ & \end{array}$
b]

c]

Asked in: NEET 2016 (Phase 1)

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