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CBSE

Subject

Chemistry
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NEET Chemistry : Aldehydes, Ketones and Carboxylic Acids

Multiple Choice Questions

171.

Aldol condensation will not occur in :

  • HCHO

  • CH3CH2CHO

  • CH3COCH3

  • CH3CHO



172.

What is the correct IUPAC name of :

  • 4 - methoxy - 2 - nitrobenzaldehyde

  • 4 - formyl - 3 - nitro anisole

  • 4 - methoxy - 6 - nitrobenzaldehyde

  • 2 - formyl - 5 - methoxy nitrobenzene



173.

The intermediate formed in aldol condensation is :

  • aldol

  • carbanion

  • alcohol

  • alpha-hydrogen ester



174.

The cyanohydrin of which compound, gives lactic acid on hydrolysis ?

  • HCHO

  • CH3CHO

  • C6H5CHO

  • CH3COCH3



175.

CH3COCH3 car be converted to CH3CH2CH3 by the action of :

  • HIO3

  • HNO3

  • HI

  • H3PO3



176.

The reaction ,

CH3-CO-OCH3 + C2H5OH H+ or OH- CH3-CO-OC2H5 + CH3OH is called :

  • Perkin's reaction

  • Claisen Schmidt reaction

  • Esterification

  • Trans-esterification



177.

The reaction ,

2CH3-CO-OC2H5 C2H5ONa CH3-CO-CH2-CO-OC2H5 + C2H5OH is called :

  • Etard reaction

  • Perkin's reaction

  • Claisen condensation

  • Claisen Schmidt reaction



178.

Formaldehyde reacts with ammonia to give urotropine .The formula of urotropine is :

  • (CH2)6N4

  • (CH2)4N3

  • (CH2)6N6

  • (CH2)3N3



179.

CH6CO5NHCH3 can be converted into C6H5CH2NHCH3 by

  • NaBH4

  • H2-Pd/C

  • LiAl4

  • Zn-Hg/HCl



180.

The compound most suitable for the preparation of cyanohydrin is :

  • C2H5COOH

  • C6H5NH2

  • C2H5COC2H5

  • C2H5-C2H5



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