Innucleophilic addition reactions, the reactivities of carbonyl compounds NO2CH2CHO(I), ClCH2CHO(II), CH3CHO(III) and CH3CH2CHO (IV) are in the order of
Which of the following are compounds ?
(i) CO (ii) No (iii) NO (iv) Co
(a) (i) and (ii) (b) (ii) and (iii) (c) (i) and (iii) (d) (ii) and (iv)