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Aldehydes Ketones and Carboxylic Acids question

2015 · Q79
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Aldehydes Ketones and Carboxylic Acids question

2015 · Q79

NEETChemistryAldehydes Ketones and Carboxylic AcidsMCQ+4 / −1
An organic compound 'X' having molecular formula C5H10O yields phenylhydrazone and gives negative response to the iodoform test and Tollens' test. It produces n-pentane on reduction. 'X' could be
  1. A
    3-pentanone
  2. B
    n-amyl alcohol
  3. C
    pentanal
  4. D
    2-pentanone
View written solutionFree

Correct answer: A

As the compound X yields phenyl hydrazone and gives negative response to the iodoform test and Tollen’s test so it must contain a C = O group but neither a methyl ketone nor in aldehyde. Thus, the structure of X will be

AIPMT 2015 Cancelled Paper Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 85 English Explanation

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