MCQ
Bullet-proof steel alloy is prepared by using
- A$Sc$
- B$Ni$
- ✓$Zr$
- D$Zn$
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$(I)$ $C_6H_5-CH-Br$
$(II)$ $\begin{array}{*{20}{c}}
{{C_6}{H_5} - CH - {C_2}{H_5}} \\
{|\,\,\,} \\
{Br}
\end{array}$
takes places through the mechanism given below :
$NO + Br _2 \Leftrightarrow NOBr _2 \text { (fast) }$
$NOBr _2+ NO \rightarrow 2 NOBr \text { (slow) }$
The overall order of the reaction is $.....$.
