The reagent with which both aldehyde and acetone react easily is

$C_7H_6O$ is the molecular formula of $X$,which gives a negative Fehling test but a positive Tollen's test. $X$ $\xrightarrow[AcONa]{Ac_2O} Y$ $\xrightarrow[Me_2NH]{1. SOCl_2} Z$. The correct option is:

Which of the following does not give a brick red precipitate with Fehling solution?

Fehling's solution is a mixture of two solutions. One of them is $CuSO_4$. What does the other solution contain?

The end product $(C)$ of the reaction is:

In the reaction $CH_3CHO + HCN \to CH_3CH(OH)CN$,a chiral centre is produced. This product would be