Which of the following on oxidation forms $propanone$?

The steps involved in the conversion of propan$-2-$ol to propan$-1-$ol are in the order

The alcohol which gives a red color with the Victor Meyer test is:

An alcohol having molecular weight $74$ gives white turbidity with Lucas reagent within $5-10$ minutes. It reacts with sodium metal to give $Y$. $Y$ reacts with $CH_3-Br$ to give $Z$. $Z$ is:

Which one of the following is a secondary alcohol?

$CH_3 CH_2 OH$ $\xrightarrow{Cl_2} CH_3 CHO$ $\xrightarrow{3 Cl_2} Cl_3 CCHO$. In the above reactions,the role of $Cl_2$ in step-$1$ and step-$2$ respectively is: