Among the following, the achiral amino acid is

• 2-ethylalanine

• 2-methylglycine

• 2-hydroxymethyl serine

• tryptophan

172.

Nitrobenzene gives N-phenylhydroxylamine by

• Sn/HCl

• H₂/Pd-C

• Zn/NaOH

• Zn/NH₄Cl

Assertion : Cis-1,3-dihydroxycyclohexane exists in boat conformation.

Reason : In the chair form, there will not be hydrogen bonding between the two hydroxyl groups.

• If both assertion and reason are true and the reason is the correct explanation of the assertion.

• If both assertion and reason are true and the reason is not the correct explanation of the assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

The major product of the given reaction is

In the Lassaigne's test for the detection of nitrogen in an organic compound, the appearance of blue coloured compound is due to

• ferric ferricyanide

• ferrous ferricyanide

• ferric ferrocyanide

• ferrous ferrocyanide

Which ofthe following alkanes is optically active?

• 3-Methylhexane

• Propane

• 2, 3, 4-Trimethylpentane

• 2-Methylbutane

The total number of aromatic species generated in the following reactions is

• zero

• 2

• 3

• 4

Optical isomerism is exhibited by (ox= oxalate anion; en= ethylenediamine).

• cis-[CrCl₂(ox)₂]^3-

• [Co(en)₃]³⁺

• trans-[CrCl₂(ox)₂]^3-

• [Co(ox) (en)₂]⁺

The IUPAC name of the following molecule is

• 5,6-dimethylhept-2-ene

• 2,3-dimethylhept-5-ene

• 5,6-dimethylhept-3-ene

• 5-iso-propylhex-2-ene

The reagents to carry out the following conversion are

• HgSO₄/dil. H₂SO₄

• BH₃; H₂O₂/NaOH

• OSO₄; HIO₄

• NaNH₂/ CH₃I; HgSO₄/ dil.H₂SO₄