MCQ
$Ph - C \equiv C - C{H_3}\xrightarrow{{H{g^{2 + }}/{H^ + }}}A$, $A$ is
- ✓

- B

- C

- D







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Statement $I$: Fluorine has most negative electron gain enthalpy in its group.
Statement $II$: Oxygen has least negative electron gain enthalpy in its group.
In the light of the above statements, choose the most appropriate from the options given below.
$2Na(s) + 2HCl(g)\,\, \to \,\,2NaCl(s) + {H_2}(g),$$\Delta H = - 152\,kcal$ For the reaction $Na(s) + \frac{1}{2}C{l_2}(g)\,\, \to \,\,NaCl(s),\,\Delta H = $ .....$kcal$
