MCQ
Deviation from Markownikoff's rule occurs in presence of
- AZinc
- ✓Peroxides
- C$Hg - Zn/HCl$
- DAll of these
✓
Answer
Correct option: B.
Peroxides
b
(b) $C{H_3} - CH = C{H_2} + HBr \xrightarrow{Markownikoff\,rule} \mathop {C{H_3} - \mathop {CH}\limits_{\mathop {|\,\,\,\,\,\,}\limits_{Br\,\,} } - C{H_3}}\limits_{2 - {\rm{Bromopropane}}} + HBr$
(b) $C{H_3} - CH = C{H_2} + HBr \xrightarrow{Markownikoff\,rule} \mathop {C{H_3} - \mathop {CH}\limits_{\mathop {|\,\,\,\,\,\,}\limits_{Br\,\,} } - C{H_3}}\limits_{2 - {\rm{Bromopropane}}} + HBr$
$\xrightarrow{presence \,of\, peroxide} \mathop {C{H_3} - C{H_2} - C{H_2} - Br}\limits_{{\rm{1 - Bromopropane }}} $
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
$A = 1s^2\, 2s^2\, 2p^4$ $B = 1s^2\, 2s^2\, 2p^5$ $C = 1s^2\, 2s^2\, 2p^6$
$A, B$ and $C$ are atoms/anion of same element. Then which one is correct (One of $A/B/C$ is neutral atom)
→$A, B$ and $C$ are atoms/anion of same element. Then which one is correct (One of $A/B/C$ is neutral atom)
Then choose the correct option
When Phenol is heated with phthalic anhydride in concentrated sulphuric acid and the hot reaction mixture is poured into a dilute solution of sodium hydroxide, the product formed is
Which among the following attraction is strongest?
If $20\, ml$ of $0.1\, M \,NaOH$ is added to $30\, ml$ of $0.2\, M \,CH_3COOH (pK_a = 4.74)$. Find $pH$ of resulting solution :-
→The molecules with most polar bond, is
A chloro compound $"A".$
→$(i)$ forms aldehydes on ozonolysis followed by the hydrolysis.
$(ii)$ when vaporized completely $1.53\, \mathrm{~g}$ of $\mathrm{A}$, gives $448\, \mathrm{~mL}$ of vapour at $STP.$
The number of carbon atoms in a molecule of compound $A$ is ...... .
According to the Arrhenius equation,
→($A$) a high activation energy usually implies a fast reaction.
($B$) rate constant increases with increase in temperature. This is due to a greater number of collisions whose energy exceeds the activation energy.
($C$) higher the magnitude of activation energy, stronger is the temperature dependence of the rate constant.
($D$) the pre-exponential factor is a measure of the rate at which collisions occur, irrespective of their energy.
The enthalpy change $\left( {\Delta H} \right)$ for the reaction,
→$N_2(g) + 3H_2(g) \to 2NH_3(g$) is
$-92.38\, KJ$ at $298\, K$. The internal energy change $\left( {\Delta U} \right)$ at $298\, K$ is ........$KJ$
Assuming fully decomposed, the volume of $C{O_2}$ released at $STP$ on heating $9.85\,g$ of $BaC{O_3}$ (Atomic mass of $Ba=137$) will be ................ $\mathrm{L}$
→