Which of the following compounds is obtained by dry distillation of calcium propionate?

Identify the product $A$ in the following reaction:
$CH_3-CCl_2-CH_2-CH_3 + 2KOH_{(aq)} \xrightarrow{\Delta} A + 2KCl + H_2O$

In the following reaction,product $P$ is: $RCOCl \xrightarrow{H_2, Pd-BaSO_4} P$

Identify the reagent used for the preparation of benzophenone from benzonitrile.

An organic compound $X$ gives a red precipitate on heating with Fehling's solution. Which one of the following reactions yields $X$ as a major product?

Identify $Z$ in the following sequence of reactions.
$C_2H_4Br_2$ $\xrightarrow[\text{(ii) } NaNH_2]{\text{(i) alc- } KOH} X$ $\xrightarrow[\text{Red hot}]{\text{Fe tube, } 873 \ K} Y$ $\xrightarrow[\Delta]{\left(CH_3CO\right)_2O / \text{Anhyd-} AlCl_3} Z$