The given compound can be converted into the product by which of the following reagents?

$A$ reaction of benzonitrile with one equivalent of $CH_{3}MgBr$ followed by hydrolysis produces a yellow liquid $P$. The compound $P$ will give a positive result for which of the following tests?

Statement-$I$ :- Acetaldehyde and acetone can be distinguished by Tollen's reagent.
Statement-$II$ :- Aromatic aldehyde does not give Fehling test.

Which pair of reactant compounds may be used to make the given acetal?

Which of the following compounds does not react with $NaHSO_3$?

Given below are two statements: Statement $I$: The condensation reaction between $CH_{3} - CH = O$ and $H_{2}N - NH - C(=O) - NH_{2}$ under optimum pH will produce $CH_{3} - CH = N - N(H) - C(=O) - NH_{2}$. Statement $II$: The molecule,$Ph - CH(OH)(OCH_{3})$ will generate $Ph - CH = O$ in the presence of dilute acid. In the light of the above statements,choose the correct answer from the options given below: