Select the coloured compound amongst the following .
(At. no. Ti= 22, Cr= 24, Cu= 29, Zn= 30)
TiCl4
CrCl3
ZnCl3
CuCl
Which among the following solids crystallises as a face centred cube?
Iron
Rubidium
Uranium
Platinum
Which oxyacid of sulphur contains S-S single bond?
Oleum
Marshall's acid
Dithionic acid
Thiosulphuric acid
Select the diamagnetic complex ion amongst the following complexes (At. no. : Fe = 26,CO = 27)
K3[Fe(CN)6]
[Co(NH3)6)Cl3
K3[FeF6]
K3[CoF6]
Write IUPAC name of following compound
2-amino-4-hydroxybenzoic acid
6-amino-4-hydroxybenzoic acid
3-amino-4-carboxyphenol
2-carboxy-4-hydroxyaniline
Select the ether among following that yields methanol as one the products on reaction with cold hydroiodic acid
1-methoxybutane
1-methoxybutane-2-methylpropane
2-methoxy-2-methylpropane
methoxybenzene
The two monomers used in the preparation of dextron are
3-hydroxy butanoic acid and 3-hydroxy pentanoic acid
∈ amino caproic acid and glycine
isobutylene and isoprene
lactic acid and glycolic acid
Deficiency of which vitamin causes degeneration of spinal cord?
E
K
B12
A
C.
B12
Degeneration of spinal cord is also known as lichtheims disease. It arises due to deficiency of vitamin-B12 (i.e., cyanocobalamine, C63H88N14PCO). It is usually associated with pernicious anemia. Sources of vitamin-B12 are liver of ox, sheep, pig, fish, etc.
One mole of stachyose on hydrolysis yields
1 mole of glucose+ 1 mole of fructose+ 2 mole of galactose
2 mole of glucose + 1 mole of fructose + 1 mole of galactose
1 mole of glucose+ 2 mole of fructose+ 1 mole of galactose
2 mole of glucose+ 2 mole of fructose
Alkaline hydrolysis of which among the following compounds leads to the formation of a racemate?
1-bromo-1-phenylethane
1-chloro-3-methylbutane
Bromoethane
1-chloropropane