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
d(+) lactic acid is obtained from :
fermentation of cane sugar
green vegetables
muscles
fermentation of milk sugar
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
D.
CH3COCH2COOH
CH3COCH2COOH is a -keto acid. Thus, decarboxylation is maximum in a carboxylic acid containing an electron withdrawing group such as -CO or -COOH at the - carbon atom with respect to the -COOH group.
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
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
The product formed when hydroxylamine condenses with a carbonyl compound is called :
hydrazide
oxime
hydrazine
hydrazone