—CHO and tollen reagent AgNH32+OH-   —CHO into —COOH. ">—CHO and tollen reagent AgNH32+OH-   —CHO into —COOH. ">—CHO and tollen reagent AgNH32+OH-   —CHO into —COOH. ">

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CBSE

Subject

Chemistry
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NEET Chemistry : Aldehydes, Ketones and Carboxylic Acids

Multiple Choice Questions

71.

Vinegar contains

  • 100% acetic acid

  • 10- 20% acetic acid

  • 7 - 8% acetic acid

  • 1% acetic acid



72.

CH3CH2CCH R butanone-2. R is

  • Hg++/ dil.H2SO4

  • KMnO4

  • KClO3

  • K2Cr2O7



73.

In the reaction

HCL+O+CH3MgI   A  H2O  B+Mg(OH) I

What are A and B?

  • CH3O MgI and CH3-OH

  • CH3CH2 OMg I and C2H5-O-C2H5

  • CH3CH2O Mg I and CH3-CH2-OH

  • CH3-CH2-I and CH3-CH2-OH



74.

Predict the following product

(X) Cinnanaic acid is



75.

Identify the correct decreasing order of acidity of the given carboxylic acid.                               



76.

Which one of the following reactions cannot be used for the reduction of:

  • HI and red phosphorus at 200C

  • Wolff-Kishner reduction

  • Clemmensen reduction

  • Wurtz reaction



77.

Predict the product Bin the given reaction:



78.

During reduction of carbonyl compounds by hydrazine and KOH, the first intermediate formed is:

  • RC≡N

  • RCONH2

  • RCH≡N

  • RCH=NH2



79.

In the given reaction,

CH3-CH2-CH2-O-CH2-CH3coldHCl [X]+[Y]

[X]+[Y] are respectively.

  • CH3-CH2-CH2OH and CH3-CH2-Cl

  • CH3-CH2-CH2-Cl and CH2-CH2-OH

  • CH3-CH2-CH2-Cl and CH2=CH2

  • CH3-CH3=CH2 and CH2=CH2



80.

o-toluic acid on reaction with Br2 + Fe gives:



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