MCQ
$ \, $
  • A

  • B

  • C


Answer

Correct option: D.

d
If $HBr$ attacks on left side double bond of the conjugated diene, then the formation of tertiary carbocation occur which is highly stable and if $HBr$ attacks on right side double bond, the formation of secondary carbocation occurs which is less stable.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Which of the following compound has the smallest bond angle $(X - A - X)$ in  each series respectively?
$(A)\, OSF_2$              $OSCl_2$            $OSBr_2$
$(B)\, SbCl_3$              $SbBr_3$             $SbI_3$
$(C)\, PI_3$                  $AsI_3$                $SbI_3$
When $K_2 Cr_2O_7$  is converted to $K_2CrO_4$ , the change in the oxidation state of chromium is
aq. $NaOH + P_4$ (white) $\rightarrow PH_3 + X;$ compound $X$ is
Transition metals are often paramagnetic owing to
How many gram of cobalt metal will be deposited when a solution of cobalt $(II)$ chloride is electrolyzed with a current of $10$ amperes for $109$ minutes $(1$ Faraday $= 96,500\, C;$ Atomic mass of  $Co = 59\, u)$
product is ?
In an experiment, $1\,g$ of a non-volatile solute was dissolved in $100\,g $ of acetone (mol. mass $= 58$) at $298\,K$. The vapour pressure of the solution was found to be $192.5\,\,mm\,Hg$. The molecular weight of the solute is (vapour pressure of acetone $= 195\,\,mm\,Hg$)
Three complexes, $[CoCl(NH_3)_5]^{2+}\, (I)$, $[Co(NH_3)_5H_2O]^{3+}\, (II)$ and $[Co(NH_3)_6]^{3+}\, (III)$ Absorb light in the visible region. The correct order of the wavelength of light absorbed by them is
Major product
$2, 4$ -hexadiyne $(C_6H_6)$ is allowed to react with $Li $ in $NH_3 (liq)$. The  product obtained is treated with $1$ equivalent of $Cl_2$ in $CCl_4$. Which of the  following constitutional isomers are possible products ?