Which of the following compounds has maximum volatility?

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

The order of stability of the following tatutomeric compound is

• I> II> III

• III > II> I

• II> I> III

• II > III> I

The reaction of formaldehyde and ammonia gives:

• hexamethylene tetramine

• bakelite

• urea

• triethylene tetramine

1095.

Which of the following compounds is not formed in iodoform reaction of acetone?

• CH₃COCH₂I

• ICH₂COCH₂I

• CH₃COCHI₂

• CH₃COCl₃

Keto - enol tautomerism is not observed in

• C₆H₅COC₆H₅

• C₆H₅COCH=CH₂

• C₆H₅COCH₂COCH₃

• CH₃COCH₂COCH₃

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

• Acetone alcohol

• Phorone

• Mesityl oxide

• Benzene

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

• K₂Cr₂O₇/H₂SO₄

• Zn-Hg/HCl

• SeO₂

• Iodine/NaOH

An organic compound 'A' on treatment with ammoniacal silver nitrate gives metallic silver and produces a yellow crystalline precipitate of molecular formula C₉H₁₀N₄O₄ on treatment with Brady's reagent. Give the structure of the organic compound 'A'.

Which one of the following gives, on ozonolysis, both aldehydes and ketones?

• Me₂C = CHMe

• Me₂C = CMe₂

• MeCH₂ - C(Me) = CMe₂

• MeCH(Me) - CH = CHMe