Among the following, the achiral amino acid is
2-ethylalanine
2-methylglycine
2-hydroxymethyl serine
tryptophan
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.
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
C.
ferric ferrocyanide
To a part of sodium extract, FeSO4 solution is added and the contents are warmed. A few drops of FeCl3 solution are then added and resulting solution is acidified with conc. HCl. Bluish green or Prussian blue colour is formed and it confirms the presence of nitrogen. The reactions that occur during this test are -
2NaCN + FeSO4 → Na2SO4 + Fe(CN)2
Fe(CN)2 + 4NaCN →
3Na4 [Fe(CN)6] + 4FeCl3 → + 12 NaCl
Which ofthe following alkanes is optically active?
3-Methylhexane
Propane
2, 3, 4-Trimethylpentane
2-Methylbutane
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