CBSE  /  Class 12  /  Chemistry  /  Aldehydes, Ketones and Carboxylic Acids

  • 1. 
    The best oxidising agent- for oxidation of CH-CH = CH-CHO to CH-CH = CH-COOH is

  • Baeyefs reagent
  • Tollen’s reagent
  • SchifFs reagent
  • Acidified dichromate

  • 2. 
    Study the given reaction and identify the process which is carried out

  • It is used for purification of aldehydes and ketones
  • It is used to distinguish aldehydes from ketones
  • It is used to prepare cyclic aldehydes and ketones
  • It is used to study polar nature of aldehydes and ketones

  • 3. 
    Hydrocarbons are formed when aldehydes and ketones are reacted with amalgamated zinc and conc. HCl. The reaction is called

  • Cannizzaro reaction
  • Clemmensen reduction
  • Rosenmund reduction
  • Wolff-Kishner reduction

  • 4. 
    In the following sequence of reaction, the final product (Z) is

  • ethanal
  • propan-2-ol
  • propanone
  • propan-2-ol

  • 5. 
    When propanal reacts with 2-methylpropanal in presence of NaOH, four different products are formed. The reaction is known as

  • Aldol condensation
  • Cross aldol condensation
  • Cannizzaro reaction
  • HVZ condensation

  • 6. 
    Which of the following does not answer iodoform test?

  • n-Butyl alcohol
  • sec-Butyl alcohol
  • Acetophenone
  • Acetaldehyde

  • 7. 
    Which of the following is the most.reactive isomer?

  • 8. 
    To differentiate between pentan-2-one and penta-3-one a test is carried out. Which of the following is the correct answer?

  • Pentan-2-one will give silver mirror test
  • Pentan-2-one will give iodoform test
  • Pentan-3-one will give iodoform test
  • None of these

  • 9. 
    Fill in the reagents for the given conversation:

  • 10. 
    Which compound is obtained when acetaldehydes are treated with dilute solution of caustic soda?

  • Sodium acetate
  • Resinous mass
  • Aldol
  • Ethyl acetate
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