Alkenes can be preapred by:...

Alkenes can be preapred by:

A

dehydrohalogenation of alkyl halide

B

Sabatier-Sanderen's reduction of alkynes

C

dehydration of alcohols with conc. `H_(2)SO_(4)` at 443 K

D

treatment of `3^(@)` alkyl halide at 573 K

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The correct Answer is:

A, C, D

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