Which of the following sequences of rate of alkaline hydrolysis of esters is correct:

Which of the following is used to perform following transformation:

Which of the following reagents are involved in the following transformation ?

In the Cannizzaro reaction given below,

$2\mathrm{Ph}-\mathrm{CHO}\stackrel{{\mathrm{OH}}^{-}}{⟶}\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{OH}+{\mathrm{PhCO}}_2^{-}$ the slowest step is

Which one of the following orders of acid strength is correct?

How many products are obtained in the given reaction:

Number of compounds that can give positive test with Tollen's and Fehling both :

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

$\left(\mathrm{ii}\right)$ $\mathrm{PHCHO}$

$\left(\mathrm{iii}\right)$ 

$\left(\mathrm{iv}\right)$ $\mathrm{HCOOH}$

$\left(\mathrm{v}\right)$ 

$\left(\mathrm{vi}\right)$ 

$\left(\mathrm{vii}\right)$