$OHC-CH_2-CH_2-CH_2-CH_2-CHO \xrightarrow{OH^{-} / \Delta} \text{Product } (A) \text{ is:}$

In the Claisen$-$Schmidt reaction to prepare dibenzalacetone from $5.3 \ g$ benzaldehyde,a total of $3.51 \ g$ of product was obtained. The percentage yield in this reaction was $......... \%.$

Which of the following statement$(s)$ is/are correct about the given compound?
$CH_3COCH_2COOC_2H_5$

Identify the reagents $X$ and $Y$ in the following reaction sequence:
$CH_3COCl \xrightarrow{X} CH_3CH_2OH$
$CH_3COCl \xrightarrow{Y} CH_3CHO$

What is meant by the following terms? Give an example of the reaction in each case.
$(i)$ Cyanohydrin
$(ii)$ Acetal
$(iii)$ Semicarbazone
$(iv)$ Aldol
$(v)$ Hemiacetal
$(vi)$ Oxime
$(vii)$ Ketal
$(viii)$ Imine
$(ix)$ $2,4-DNP$ derivative
$(x)$ Schiff's base

Which of the following is correct for the reaction shown?