Question

Question 5
Which of the following are correct structural isomers of butane?
(i)

(ii)

(iii)

(iv)

(a) (i) and (iii)
(b) (ii) and (iv)
(c) (i) and (ii)
(d) (iii) and (iv)

Answer 1

Structural isomers have the same molecular formula but different structures. In the given options, (i) and (iii) have the same molecular formula as butane (C4H10C_{4}H_{10}C4​H10​) but exhibit different structures. Therefore, correct option is (a)- (i) and (iii).