(a) Water solubility is maximum at a $pH$ when concentrations of anions and cations are equal
(b) They give ninhydrin test
(c) On reacting with nitrous acid give off ${N_2}$
Row $I-Image$
Row $II:$
$(i)$ $\alpha- D -(-)$ Fructofuranose.
$(ii)$ $\beta$-D-(-) Fructofuranose
$(iii)$ $\alpha$-D-(-) Glucopyranose.
$(iv)$ $\beta- D -(-)$ Glucopyranose
Correct match is