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MolSynapse / Question bank / Aldehydes, Ketones and Carboxylic Acids / Oxidation and reduction of carbonyls (Clemmensen, Wolff-Kishner, Tollens, Fehling)
JEE Main levelSingle correct optionDifficulty 2 of 3co151

Which statement about hydride reducing agents is correct?

  1. A can be used in water because it is stable to hydrolysis
  2. B can be used in methanol or ethanol to reduce aldehydes and ketones
  3. C reduces carboxylic acids to primary alcohols under the same conditions
  4. D readily reduces isolated C=C bonds in alkenes

Answer: B

is mild and works in alcoholic solvents, reducing aldehydes and ketones. reacts violently with water and does not normally reduce isolated alkenes. does not reduce carboxylic acids.
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