Which of the following does not react with $NaHSO_3$ (sodium bisulphite)?

The rate of hydrate formation for the given compounds is:

Which of the following compounds would not give tert-butyl alcohol when treated with excess methylmagnesium bromide $(CH_3MgBr)$ followed by acid?

In the given reaction $CH_3-CH_2-C(=O)-CH_2-COOC_2H_5$ $\xrightarrow{[X]} (A)$ $\xrightarrow{(i) LiAlH_4, (ii) H_2O/H^{+}} CH_3-CH_2-C(=O)-CH_2-CH_2OH + C_2H_5OH$,$[X]$ will be:

Tollen's reagent and Fehling solutions are used to distinguish between

Which of the following compounds can undergo both Cannizzaro reaction and Aldol condensation?