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CBSE

Subject

Chemistry
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NEET Chemistry : Aldehydes, Ketones and Carboxylic Acids

Multiple Choice Questions

131.

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



132.

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

  • hydrazide

  • oxime

  • hydrazine

  • hydrazone



133.

d(+) lactic acid is obtained from :

  • fermentation of cane sugar

  • green vegetables

  • muscles

  • fermentation of milk sugar



134.

The corrcet decreasing order of pKb is 

  • I > II > III > IV

  • III > IV > II > I

  • II > III > IV > I

  • IV > II > I > III



135.

Methyl isocyanide on hydrolysis gives :

  • CH3NH2

  • HCOOH

  • CH3COOH

  • Both (a) and (b)



136.

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



137.

The reagent used in Clemmensen's reduction is :

  • conc H2SO4

  • Zn-Hg / conc HCl

  • aq KOH

  • alc KOH



138.

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



139.

The correct decreasing order of pKa is

  • II > IV > I > III

  • IV > II > III > I

  • III > II > IV > I

  • IV > I > II > III



140.

Maximum decarboxylation occurs in

  • CH3COOH

  • C6H5COOH

  • C6H5CH2COOH

  • CH3COCH2COOH



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