Chemistry - GOC Question with Solution | TestHub

(A) Hydrogen bonding → 1 (CH₃NH₂)

CH₃NH₂ contains an N–H bond

Nitrogen is electronegative, so hydrogen bonding is possible

(B) Aromatic → 2 (Benzyne), 4 (Tropylium cation)

Benzyne has a cyclic, conjugated structure

Tropylium cation (C₇H₇⁺) has 6 π electrons and follows Hückel’s rule (4n+2)

Therefore, both are aromatic

(C) Electrophile → 2, 3, 4

Benzyne is electron-deficient

SO₃ is a strong electrophile (used in sulfonation)

Tropylium cation has a positive charge

Hence, all can accept electrons

(D) Nucleophile → 1 (CH₃NH₂)

Nitrogen has a lone pair of electrons

It donates electrons, so it acts as a nucleophile