Question

C₆H₁₄中含有3个“—CH₃”的结构种数

A．1

B．2

C．3

D．4

Answer 1

B

分子式为C₆H₁₄可知为烷烃,有2种：
CH3-CH-CH2-CH2-CH3          ,CH3-CH2-CH-CH2-CH3        
|                                |                                   
CH3                              CH3                             
B正确。故本题选B。