MCQ
Which of the following reaction does not involve carbocation as an intermediate ?
- ✓$C{H_3} - CH = C{H_2}\,\xrightarrow[{{H_2}{O_2}}]{{HBr}}$
- B$C{H_3} - CH = C{H_2}\,\xrightarrow{{HCl}}$
- C
- D
✓
Answer
Correct option: A.
$C{H_3} - CH = C{H_2}\,\xrightarrow[{{H_2}{O_2}}]{{HBr}}$
a
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In the given reaction
→$X + Y\mathop {\xrightarrow{{NaOH}}}\limits_{5\,^oC} \begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - CH - CHO} \\
{\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}}
\end{array}$
$(X)$ and $(Y)$ will respectively be :
Assertion : Galvanised iron does not rust.
Reason : Zinc has a more negative electrode potential than iron.
$\begin{array}{*{20}{c}}
{HN = C - linkage\,?} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,N{H_2}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
→{HN = C - linkage\,?} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,N{H_2}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
When methyl cyanide is hydrolysed in presence of alkali, the product is
The first steps of SN1 and SN2 reactions are, respectively:
Decomposition of $H_2O$ follows a first order reaction. In fifty minutes the concentration of $H_2O_2$ decreases from $0.5$ to $0.125\,\min$ one such decomposition. When the concentration of $H_2O_2$ reaches $0.05\, M,$ the rate of formation of $O_2$ will be :
→Which can exist both as diastereoisomer and enantiomer?
$96500 $ coulombs of electric current liberates from $CuS{O_4}$ solution .............. $\mathrm{gm\,\,Cu}$
→Consider the following sequence of reactions.
→The ketone. $(A)$ is
Ketone $A\,\xrightarrow[2\,.\,{{H}_{2}}O]{1.\,{{C}_{2}}{{H}_{5}}MgBr}B$ $\xrightarrow[-\,{{H}_{2}}O]{{{H}_{2}}S{{O}_{4}},\,Heat}C$ $\xrightarrow[2.\,Zn\,,\,{{H}_{2}}O]{1.{{O}_{3}}}$ Figure
A chemist wants to determine the molecular geometry of the $[CoCl_4]^{2-}$ ion. Which of the following gives the best suggestion for a measurement and for the interpretation of that measurement ?
→