The major products $Y$ and $Z$ in the following reactions are

Which of the following does not reduce Fehling solution?

The amount (in $mol$) of bromoform $(CHBr_{3})$ produced when $1.0 \ mol$ of acetone reacts completely with $1.0 \ mol$ of bromine in the presence of aqueous $NaOH$ is $......$

In the given reaction :
$CH_3CHO$ $\xrightarrow[(i) \ NaCN/HCl]{(ii) \ H_2O/H^{\oplus}/\Delta} (A)$ $\xrightarrow[reagent]{Fenton} (B)$
$(B)$ will be :

$x$ is the product obtained from propanenitrile and stannous chloride in the presence of hydrochloric acid followed by hydrolysis. $y$ is the product obtained from but$-2-$ene by ozonolysis followed by hydrolysis. From the following, which product is not obtained when one mole of $x$ and one mole of $y$ react with each other in the presence of alkali followed by heating?

Among the following,the number of compounds which will give positive iodoform reaction is:
$(a)$ $1-$Phenylbutan$-2-$one
$(b)$ $2-$Methylbutan$-2-$ol
$(c)$ $3-$Methylbutan$-2-$ol
$(d)$ $1-$Phenylethanol
$(e)$ $3,3-$dimethylbutan$-2-$one
$(f)$ $1-$Phenylpropan$-2-$ol