MCQ
Which reactions are most common in alkenes
- AElectrophilic substitution reactions
- BNucleophilic substitution reactions
- ✓Electrophilic addition reactions
- DNucleophilic addition reactions
$C{H_3} - CH = C{H_2} + {H^ + } \xrightarrow{Slow} \mathop {C{H_3} - \mathop C\limits^ + H - C{H_3}}\limits_{{2^o}{\rm{ carbonium ion}}} $
$C{H_3} - \mathop {{\text{ }}C}\limits^ + H - C{H_3} + B{r^ - }\xrightarrow{{Fast}}$ $\mathop {\begin{array}{*{20}{c}}
{C{H_3} - CH - C{H_3}} \\
{|\,\,\,\,} \\
{\,Br\,\,\,}
\end{array}}\limits_{2 - Bromopropane} $
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$(A)$ Non metals have higher electronegativity than metals.
$(B)$ Non metals have lower ionisation enthalpy than metals.
$(C)$ Compounds formed between highly reactive nonmetals and highly reactive metals are generally ionic.
$(D)$ The non-metal oxides are generally basic in nature.
$(E)$ The metal oxides are generally acidic or neutral in nature.
Oxygen $(61.4\%);$ Carbon $(22.9\%),$ Hydrogen $(10.0\%);$ and Nitrogen $(2.6\%).$ The weight which a $75\, kg$ person would gain if all $^1H$ atoms are replaced by $^2H$ atoms is ....... $kg$