E2 elimination

The order of E_(2) elimination for alkyl halide is

Which of the following halides undergo E_(2) elimination?

Which of the following most readily undergoes E_(2) elimination with a strong base?

|| E2 and E1 elimination reaction ||

The total number of distinct alkenes which can result from E_(2) elimination of the compound below is

If 3-chloromethylhexane is treated with C_(2)H_(5)Ona//C_(2)H_(5)OH, E_(2) elimination reaction takes place predominantly. How many different alkenes would be formed ?

Give the structures of two different alkyl bromides both of which yield the indicated alkene as the exclusive product of E_(2) elimination: (a) CH_(3) -CH=CH_(2) " "(b) (CH_(3))_(2) C=CH_(2) (C) BrCH=CBr_(2)