Aldehydes, Ketones and Carboxylic Acids

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

Methyl isocyanide on hydrolysis gives :

• CH₃NH₂

• HCOOH

• CH₃COOH

• Both (a) and (b)

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

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 pK_b is 

• I > II > III > IV

• III > IV > II > I

• II > III > IV > I

• IV > II > I > III

The correct decreasing order of pK_a is

• II > IV > I > III

• IV > II > III > I

• III > II > IV > I

• IV > I > II > III

The reagent used in Clemmensen's reduction is :

• conc H₂SO₄

• Zn-Hg / conc HCl

• aq KOH

• alc KOH

The product formed when hydroxylamine condenses with a carbonyl compound is called :

• hydrazide

• oxime

• hydrazine

• hydrazone