Denatured alcohol is:

Arrange the following alcohols in increasing order of reactivity towards elimination reaction:
$(I)$ $NO_2-CH_2-CH_2-CH_2-CH_2OH$
$(II)$ $CH_3-CH_2-CH(NO_2)-CH_2OH$
$(III)$ $CH_3-CH(NO_2)-CH_2-CH_2OH$
$(IV)$ $CH_3-CH_2-CH_2-CH_2OH$
Select the answer from the codes given below:

Explain the oxidation of $1^o$,$2^o$,and $3^o$ alcohols with examples.

When primary alcohol is oxidized with chlorine,it produces

Identify the product of the following reaction: $CH_3-CH(O)CH_2 \xrightarrow[(ii) H_2O]{(i) CH_3MgBr} ?$

Identify compound $Q$ in the following reaction: $R-OH + Q \longrightarrow R-Cl + HCl + POCl_3$