The reaction conditions used for converting 1, 2-dibromo ethane to ethylene are

The reaction conditions used for converting 1, 2-dibromo ethane to ethylene are
  1. Zn, alcohol, $\Delta$
  2. $\mathrm{KOH}$, alcohol, $\Delta$
  3. $\mathrm{KOH}$, water, $\Delta$
  4. $\mathrm{Na}$, alcohol, $\Delta$

Asked in: AP EAMCET 2002

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