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CBSE

Subject

Chemistry
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NEET Chemistry : Aldehydes, Ketones and Carboxylic Acids

Multiple Choice Questions

21.

Trichloroacetaldehyde, CCl3CHO reacts with chlorobenzene in presence of sulphuric acid and produces



22.

Which one of the following esters gets hydrolysed most easily under alkaline conditions?



23.

The oxidation of benzene by V2O5 in the presence of air produces

  • benzoic anhydride

  • maleic anhydride

  • benzoic acid

  • benzoic acid



24.

H2COH. CH2OH on heating with periodic acid gives

  • 2CO2

  • 2HCOOH

  • bold CHO
bold vertical line
bold CHO
  • bold CHO
bold vertical line
bold CHO


25.

A organic compound 'A' on treatment with NH3 gives 'B' which on heating gives 'C', 'C" when treated with Br2 in the presence of KOH produces ethylamine. Compound ' A' is

  • CH3COOH

  • CH3CH2CH2COOH

  • CH3(CH3)CHCOOH

  • CH3(CH3)CHCOOH



26.

The relative reactivities of acyl compounds towards of nucleophilic substitution are in the order of 

  • Acyl chloride> Acid anhydride> Ester> Amide

  • Ester > Acyl chloride> Amide > Acid anhydride

  • Acid anhydride > Amide > Ester> Acyl chloride

  • Acyl chloride > Ester > Acid anhydride > Amide



27.

Acetophenone when reacted with a base, C2H5ONa, yields a stable compound which has the structure



28.

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is 

  • CH3COOCH3

  • CH3CONH2

  • CH3COOCOCH3

  • CH3COOCOCH3



29.

Acetamide is treated with the following reagents separately. Which one of these would yield methylamine? 

  • NaOH - Br2

  • Sodalime

  • Hot conc. H2SO4

  • Hot conc. H2SO4



30.

Propionic acid with Br2-P yields a dibromo product. Its structure would be

  • CH2Br - CHBr -COOH

  • CH2-Br-CH2-COBr

  • CH2-Br-CH2-COBr



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