(a(i))
State the functional group which $\text{Br}_2(\text{aq})$ tests for.
(a(ii))
State the functional group which $\text{Na}(\text{s})$ tests for.
(a(iii))
State the functional group which $\text{I}_2(\text{aq}) + \text{OH}^-(\text{aq})$ tests for.
(a(iv))[4]
State the functional group which 2,4-dinitrophenylhydrazine tests for.
(b)[2]
Using the results of the tests above, suggest structures for compounds $\text{D}$ and $\text{E}$.
(a)[4]
State the functional groups tested by the following reagents: (i) $\text{Br}_2\text{(aq)}$ (ii) $\text{Na(s)}$ (iii) $\text{I}_2\text{(aq)} + \text{OH}^-\text{(aq)}$ (iv) 2,4-dinitrophenylhydrazine.
(c)[3]
Compound C is present as two stereoisomers. Draw the structural formula for each isomer, and state the type of stereoisomerism involved.