Benzaldehyde can be prepared by the oxidation of toluene by:

Which of the following methods can be used to prepare acetophenone?

Give names of the reagents to bring about the following transformations:
$(i)$ $\text{Hexan-}1\text{-ol}$ to $\text{hexanal}$
$(ii)$ $\text{Cyclohexanol}$ to $\text{cyclohexanone}$
$(iii)$ $p\text{-Fluorotoluene}$ to $p\text{-fluorobenzaldehyde}$
$(iv)$ $\text{Ethanenitrile}$ to $\text{ethanal}$
$(v)$ $\text{Allyl alcohol}$ to $\text{propenal}$
$(vi)$ $\text{But-}2\text{-ene}$ to $\text{ethanal}$

Dry heating of calcium acetate gives

Which of the following compounds is obtained when toluene is treated with $CrO_2Cl_2$ in the presence of $CS_2$ followed by acid hydrolysis?

Which among the following reactions does not correctly match with its reagent?