Which of the following is not a isomer of pentane ?

Question

Which of the following is not a isomer of pentane ? (A)  n -pentane (B)  2 , 2 -dimethyl 1 -propane (C)  2 , 3 -dimethyl 1 -butane (D)  2 -methyl 1 -butane

Tardigrade Admin · Accepted Answer

(a)n -pentane CH 3- CH 2- CH 2- CH 2- CH 3 ( C 5 H 12) (b) 2,2 -dimethyl-1-propane CH3 - underset overset|CH3 overset underset|CH3C - CH3 ( C 5 H 12) (c) 2,3 -dimethyl-1-butane CH3 - overset oversetCH3|CH - overset oversetCH3|CH - CH3 (C6H14) (d) 2 -methyl- 1 -butane CH3 - CH2 - overset oversetCH3|CH - CH3 (C6 H14)

Q. Which of the following is not a isomer of pentane ?

$n$ -pentane

$2$ , $2$ -dimethyl $1$ -propane

$2$ , $3$ -dimethyl $1$ -butane

$2$ -methyl $1$ -butane