The slowest step of Cannizarro's reaction is

1. Attack of nucleophilic

2. Hydride shift

3. Formation of anion

4. Transfer of proton

Which acid deravative is most reactive towards nucleophilic substitution reaction?

1. CH₃COCl

2. (CH₃CO)₂O

3. CH₃COOC₂H₅

4. CH₃CONH₂

Which of the following gives a yellow precipitate with ${\mathrm{I}}_2/\mathrm{NaOH}$:

1. ${\mathrm{CH}}_3-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-\mathrm{OH}$

2. ${\mathrm{CH}}_3-{\mathrm{CH}}_2\mathrm{OH}$

3. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-\mathrm{H}$

4. All of the above

For the following reactions sequence 

The structure consistent with X and Y are:

	'Y'	'X'
(1)
(2)
(3)
(4)

2–Phenylcycloprop–2–en–1–one is allowed to react with phenylmagnesium bromide and the reaction mixture is hydrolyzed with perchloric acid. The product formed is

1.
2.
3.
4.

(1) 3, 2

(2) 3, 3

(3) 4, 2

(4) 4, 3

X may be

(1)
(2)
(3)
(4)

The major product is :

(1)
(2)
(3)
(4)

$\underset{\left(1\right)}{\overset{\mathrm{HCl}}{\to }}\underset{\left(2\right)}{\overset{B{r}_2/Fe}{\to }}\underset{\left(3\right)}{\overset{H^{+}}{\to }}$

The major product is

1.
2.
3.
4.

The product is :

(1)
(2)
(3)
(4)	None