MCQ
Which of the following is most stable carbocation
  • A

  • B
    ${(C{H_3})_3}\mathop C\limits^ \oplus  $
  • $C{H_3} - O - \mathop C\limits^ \oplus  {H_2}$
  • D
    $C{H_2} = CH - \mathop C\limits^ \oplus  {H_2}$

Answer

Correct option: C.
$C{H_3} - O - \mathop C\limits^ \oplus  {H_2}$
c

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

The dissociation constants of monobasic acids $A, B, C$ and $D$ are $6 \times 10^{-4}, 5 \times 10^{-5}, 3.6 \times 10^{-6}$ and $7 \times 10^{-10}$ respectively. The $pH$ values of their $0.1\, molar$ aqueous solutions are in the order
The stability of carbanions in the following.

$(i)\,\,RC \equiv \mathop C\limits^ \ominus  $

$(ii)\,\,[IMAGE]$ 

$(iii)\,\,{R_2}C = \mathop C\limits^ \ominus  H$

$(iv)\,\,{R_3}C - \mathop C\limits^ \ominus  {H_2}$

$2, 4$ -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 ?
Match $List-I$ with $List-II$.

$List-I$ $List-II$
$(A)$ $\Psi_{ MO }=\Psi_{ A }-\Psi_{ B }$ $(I)$ Dipole moment
$(B)$ $\mu=Q \times I$ $(II)$ Bonding molecular orbital
$(C)$ $\frac{N_{b}-N_{a}}{2}$ $(III)$ Anti-bonding molecualr orbital
$(D)$ $\Psi_{ MO }=\Psi_{ A }+\Psi_{ B }$ $(IV)$ Bond order

 

Which of the structures $(a - d)$ will be produced if a "ring flip" occurs in the following compound in chair form ?
Which of the following is a free radical substitution reaction?
Which of the following is correct structure of tyrosine ?
At $3000\, K$ the equilibrium pressures of $CO_2$, $CO$ and $O_2$  are $0.6$,$0.4 $ and $0.2$ atmospheres respectively. ${K_p}$ for the reaction, $2C{O_2}$ $\rightleftharpoons$ $2CO + {O_2}$ is
For the reaction, $N_{2(g)} + O_{2(g)} \rightleftharpoons  2NO_{(g)},$ the equilibrium constant is $K_1.$ The equilibrium constant is $K_2$ for the reaction,

$2NO_{(g)} + O_{2(g)} \rightleftharpoons 2NO_{2(g)}$

What is $K$ for the reaction,

$NO_{2(g)} \rightleftharpoons \frac{1}{2} N_{2(g)} + O_{2(g)}$

Covalent compounds have low melting point because