CBSE
Multiple Choice Questionsd(+) lactic acid is obtained from :
fermentation of cane sugar
green vegetables
muscles
fermentation of milk sugar
The reagent used in Clemmensen's reduction is :
conc H2SO4
Zn-Hg / conc HCl
aq KOH
alc KOH
Methyl isocyanide on hydrolysis gives :
CH3NH2
HCOOH
CH3COOH
Both (a) and (b)
The correct increasing order of reactivity for the following molecules towards electrophilic aromatic substitution is
I < IV < II < III
I < IV < II < IV
I < III < II < IV
I < III < IV < II
Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound Eon further treatment with aqueous KOH yields compound F. Compound F is
Maximum decarboxylation occurs in
CH3COOH
C6H5COOH
C6H5CH2COOH
CH3COCH2COOH
Two molecules of acetone in presence of dil. NaOH give the product :
4 - methyl - 2 - pentanone
4 - hydroxy - 2 - pentanal
3 - hydroxy isopropyl propanone
4 - hydroxy - 4 - methyl - 2 - pentanone
The product formed when hydroxylamine condenses with a carbonyl compound is called :
hydrazide
oxime
hydrazine
hydrazone
The corrcet decreasing order of pKb is
I > II > III > IV
III > IV > II > I
II > III > IV > I
IV > II > I > III
The correct decreasing order of pKa is
II > IV > I > III
IV > II > III > I
III > II > IV > I
IV > I > II > III
