question_answer

How many methyl groups are present in 2, 5-dimethyl-4-ethyl heptane?

A)  2                                            

B)  3

C)   4                                           

D)  5

Correct Answer: C

Solution :

                 The structure of 2,5-dimethyl-4-ethyl heptane is: So, in structure of 2,5 -dimethyl-4 ethyl heptane only five (5) methyl groups are present.