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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3nm219

Which of the following statements about saturated open-chain aldehydes and ketones of formula (structural isomers only) is/are correct?

  1. AThere are 7 such compounds in total
  2. BExactly 3 of them give a positive iodoform test
  3. C5 of them are aldehydes
  4. D3 of them are ketones

Answer: A, D

Aldehydes: 4; ketones: 3; total 7. Iodoform-positive: pentan-2-one and 3-methylbutan-2-one only (2). Correct: A, D.
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