The following species generates a highly stable radical on exposure to 100 W bulb light. Which one of the following represents this stable radical?

• Me₂$\stackrel{°}{\mathrm{C}}$(CN)

• $\stackrel{°}{\mathrm{C}}$H₃

• $\stackrel{°}{\mathrm{C}}\mathrm{N}$

• Me₂C(CN)N=$\stackrel{°}{\mathrm{C}}$

Which of the following nitro compounds are not soluble in NaOH?

• (CH₃)₃C-NO₂

• (CH₃)₂CH-NO₂

• CH₃CH₂-NO₂

• Ph-CH₂-NO₂

The reaction,

R-CO-R $\underset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\overset{{\mathrm{N}}_3\mathrm{H}}{\to }}$ RCONHR + N₂ is called

• Claisen-Schmidt reaction

• Kolbe-Schmidt reaction

• Schmidt reaction

• Kolbe's reaction

604.

Which of the following compounds will give red colour on Lassaigne test?

• NaCNS

• NH₂CSNH₂ (thiourea)

• p-NH₂C₆H₄SO₃H (p- aminobenzene sulphonic acid)

• all of the above

A positive carbylamine test is given by

I. N, N-dimethylaniline

II. 2, 4-dimethylamine

III. N-methyl-o-methylaniline

IV. p-methylbenzyl amine

• (II) and (IV)

• (I) and (IV)

• (II) and (III)

• (I) and (II)

Wat will be the final product of following reaction sequence?

The IUPAC name of the following compound is

• 2-carbamoylhexanal

• 2-carbamoylhex-3-enal

• 2-methyl-6-oxohex-3-enamide

• 6-keto-2-methyl hexamide

Which one of the following is the correct structure of sulphapyridine?

Iidentify Z in the following reaction:

${\mathrm{H}}_3{\mathrm{CCONH}}_2 + {\mathrm{Br}}_2 + 4 \mathrm{NaOH} \to \mathrm{Y} + {\mathrm{Na}}_2{\mathrm{CO}}_3+ 2\mathrm{NaBr} + 2{\mathrm{H}}_2\mathrm{O}$

• H₃CCH₂NH₂

• H₃CNH₂

• H₃CCOBr

• HCONH₂