NEET Chemistry Substitution Reactions MCQ Question
Which of the following statements about substitution reactions in hydrocarbons is correct?
Substitution reactions lead to the formation of a sigma complex, which loses aromatic character.
Substitution reactions only occur in alkanes and not in aromatic compounds.
In substitution reactions, the electrophile is always a halogen molecule.
Substitution reactions do not involve the loss of any hydrogen atoms from the hydrocarbon.
Correct Answer
Detailed Explanation
Statement A is correct as it describes the formation of a sigma complex (arenium ion) in aromatic substitution, which temporarily loses its aromatic character. Statements B, C, and D are incorrect because substitution reactions can occur in aromatic compounds, the electrophile may vary, and hydrogen atoms are indeed lost during substitution.
Found an issue with this question?
Related Questions
More from Substitution Reactions
More from
CH₃—C≡CH 40% H₂SO₄, 1% HgSO₄ → A Isomerisation → CH₃—C—CH₃
Match Column-I with Column-II. Column-I Column-II (a) Alkane (i) Triple bond (b) Alkyne (ii) Addition reactions (c) Paraffins (iii...
The products for the following reactions are (i) CH₃−C−CH₂−CH₃ + alc. KOH → X (ii) CH₃−CH=CH−CH₂ + O₃ → Y + X