How will you prepare the following compounds from benzene?You may use any inorganic reagent and any organic reagent having not more than one carbon atom
(i)Methyl benzoate
(ii) m-Nitrobenzoic acid
(iii)p-Nitrobenzoic acid
(iv)Phenylacetic acid
(v)p-Nitrobenzaldehyde.
(i)

(ii)

(iii)

(iv)

(v)

Convert Ethanal to But-2-enal
Write structure of the products of the following reactions: 
If vector \( \mathbf{a} = 3 \hat{i} + 2 \hat{j} - \hat{k} \) \text{ and } \( \mathbf{b} = \hat{i} - \hat{j} + \hat{k} \), then which of the following is correct?