How many of the following will form stable hydrate:

$\left(1\right) {\mathrm{CH}}_3\mathrm{CHO}$

$\left(2\right) {\mathrm{CCl}}_3\mathrm{CHO}$

$\left(3\right) {\mathrm{CF}}_3\mathrm{CHO}$

$\left(4\right)$ 

$\left(5\right)$ 

$\left(6\right)$ 

$\left(7\right)$ 

$\left(8\right)$ 

Observe the following reaction  products.

The correct statement is:

In the given reaction which one of the following statement is correct.

Choose the correct options: