The products of acid hydrolysis of $P$ and $Q$ can be distinguished by:
$P = H_2C=C(CH_3)(OCOCH_3)$
$Q = H_3C-CH=CH(OCOCH_3)$

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:

Reduction of an aldehyde produces

Which of the following does not give alcohol with $NaBH_4$?

Which compound is soluble in $H_2O$?

The product formed from the following reaction sequence is :