Question

C₆H₁₄中含有3個“—CH₃”的結構種數

A．1

B．2

C．3

D．4

Answer 1

B

分子式為C₆H₁₄可知為烷烴,有2種：
CH3-CH-CH2-CH2-CH3          ,CH3-CH2-CH-CH2-CH3        
|                                |                                   
CH3                              CH3                             
B正確。故本題選B。