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$C{H_2} = CH - \mathop C\limits^ \oplus {H_2}$

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$(i)\,\,RC \equiv \mathop C\limits^ \ominus $
$(ii)\,\,[IMAGE]$
$(iii)\,\,{R_2}C = \mathop C\limits^ \ominus H$
$(iv)\,\,{R_3}C - \mathop C\limits^ \ominus {H_2}$

| $List-I$ | $List-II$ |
| $(A)$ $\Psi_{ MO }=\Psi_{ A }-\Psi_{ B }$ | $(I)$ 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 |

$2NO_{(g)} + O_{2(g)} \rightleftharpoons 2NO_{2(g)}$
What is $K$ for the reaction,
$NO_{2(g)} \rightleftharpoons \frac{1}{2} N_{2(g)} + O_{2(g)}$