Describe Ritter test for alcohols?

Consider the following reaction:

The product$\text{'}\mathrm{P}\text{'}$gives positive ceric ammonium nitrate test. This is because of the presence of which of these$–\mathrm{OH}$ group(s)?

What are $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ compounds?

Lucas test is used to identify primary, secondary and tertiary alcohols. Explain the Process.

Two compounds $\mathrm{A}$ and $\mathrm{B}$ with same molecular formula $\left({\mathrm{C}}_3{\mathrm{H}}_6\mathrm{O}\right)$ undergo Grignard reaction with methylmagnesium bromide to give products $\mathrm{C}$ and $\mathrm{D}$. Products $\mathrm{C}$ and $\mathrm{D}$ show following chemical tests.

$\mathrm{C}$ and $\mathrm{D}$ respectively are

Which of the following reaction(s) can be used for the preparation of alkyl halides?

I. $\mathrm{C}{\mathrm{H}}_3\mathrm{C}{\mathrm{H}}_2\mathrm{O}\mathrm{H}+\mathrm{H}\mathrm{C}\mathrm{l}\stackrel{\mathrm{A}\mathrm{n}\mathrm{h}\mathrm{y}\mathrm{d}.\mathrm{ }\mathrm{Z}\mathrm{n}\mathrm{C}{\mathrm{l}}_2}{\to }$

II. $\mathrm{C}{\mathrm{H}}_3\mathrm{C}{\mathrm{H}}_2\mathrm{O}\mathrm{H}+\mathrm{H}\mathrm{C}\mathrm{l}⟶$

III. ${\left(\mathrm{C}{\mathrm{H}}_3\right)}_3\mathrm{C}\mathrm{O}\mathrm{H}+\mathrm{H}\mathrm{C}\mathrm{l}⟶$

IV. ${\left(\mathrm{C}{\mathrm{H}}_3\right)}_2\mathrm{C}\mathrm{H}\mathrm{O}\mathrm{H}+\mathrm{H}\mathrm{C}\mathrm{l}\stackrel{\mathrm{A}\mathrm{n}\mathrm{h}\mathrm{y}\mathrm{d}.\mathrm{ }\mathrm{Z}\mathrm{n}\mathrm{C}{\mathrm{l}}_2}{\to }$

The correct match is