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201.

Two aromatic compounds having formula C₇H₈O which are easily identifiable by FeCl₃ solution test (violet colouration) are:

202.

Reaction by which benzaldehyde cannot be prepared?

203.

Which of the following compounds has maximum volatility?

204.

Structure of the compound whose IUPAC name is 3-ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is

205.

The order of stability of the following tatutomeric compound is

206.

The reaction of formaldehyde and ammonia gives:

ICH₂COCH₂I

Mechanism of iodoform reaction takes place by two steps:

(I) Iodination of -CO-CH₃ group to form -CO-Cl₃

CH₃-CO-CH₃ $\overset{{OI}^{-}}{\to}$ CH₃-CO-CH₂I + OH^-

CH₃-CO-CH₂I $\overset{{OI}^{-}}{\to}$ CH₃-CO-CHI₂ + OH^-

CH₃-CO-CHI₂ $\overset{{OI}^{-}}{\to}$ CH₃-CO-CI₃ + OH^-

(II) Elimination of Cl₃ as : CI₃^- anion

208.

Keto - enol tautomerism is not observed in

209.

Which one of the following produced when acetone is saturated with HCl gas?

210.

For making distinction between 2-pentanone and 3-pentanone, the reagent to be employed is