The correct stability order of the following species/molecules is:

  • A
    $q > r > p$
  • B
    $r > q > p$
  • C
    $q > p > r$
  • D
    $p > q > r$

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Similar Questions

Match column $-I$ and column $-II$ with the correct electronic effect relation:
Column $-I$ Column $-II$
$(i)$ $C_6H_5NH_2$ $(p)$ $-R$ effect
$(ii)$ $C_6H_5OH$ $(q)$ $+R$ effect
$(iii)$ $C_6H_5NO_2$ $(r)$ $+I$ effect
$(iv)$ $CH_3CH_2Cl$ $(s)$ $-I$ effect

State True or False for the following statements:
$(i)$ The stability of carbocation is explained by the delocalized structure of hyperconjugation.
$(ii)$ The stability of carbocation is explained by drawing the resonance structure.
$(iii)$ Hyperconjugation effect is $(+)$ or $(-)$.
$(iv)$ Mesomeric effect is $(+)$ or $(-)$.

Arrange the following compounds in increasing order of the rate of aromatic electrophilic substitution reaction:

Match the following electronic effects in List-$I$ with their corresponding examples or representations in List-$II$.
List-$I$List-$II$
$(A)$ Resonance$(I)$ $C=C + H^+ \rightarrow C^+-C-H$
$(B)$ Inductive effect$(II)$ $H-CH_2-CH_2^+ \leftrightarrow H-CH_2=CH_2^+$
$(C)$ Electromeric effect$(III)$ $C_6H_6$
$(D)$ Hyperconjugation$(IV)$ $CH_3-Z \rightarrow CH_3^- + Z^+$
$(V)$ $CH_3-CH_2-CH_2Cl$

Steric inhibition of resonance takes place in

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