Number of constitutional isomers of alkane with formula `C_(6)H_(14)` is

Options

A. 3
B. 2
C. 5
D. 10

Answer

C

Explanation

The formula `C_(6)H_(4)` of alkane gives the following structural isomers-
(a) `CH_(3)- CH_(2)- underset((n"-hexane"))(CH_(2)-CH_(2))-CH_(2)-CH_(3)`
(b) `underset(("3-methyl pentane"))(CH_(3)- CH_(2) - underset(underset(CH_(3))(|))(CH)-CH_(2)-CH_(3))`
(c ) (c ) `underset(("2-methyl pentane"))(CH_(3)-CH_(2)-CH_(2)-underset(underset(CH_(3))(|))(CH)-CH_(3))`
(d) `underset(("2, 2 dimethyl butane"))(CH_(3)-underset(underset(CH_(3))(|))overset(overset(CH_(3))(|))(C )-CH_(2)-CH_(3))` (e )`underset(("2, 3, di-methyl butane"))(CH_(3)-underset(underset(CH_(3))(|))(CH)-underset(underset(CH_(3))(|))(CH)-CH_(3))`
`therefore` Total=5-isomers