An organic compound 'X' having molecular formula ${\mathrm{C}}_5{\mathrm{H}}_{10}\mathrm{O}$ yields phenyl hydrazone and gives negative response to the iodoform test and Tollen's test. It produces n-pentane on reduction. 'X' could be:

• A

  Pentanal
• B

  2-Pentanone
• Correct answer
  C

  3-Pentanone
• D

  n-Amyl alcohol

Solution

The above ketone does not give Tollen's test & iodo form test as it does not have aldehyde or ketonic group.

Hence, the correct answer is option: 'C'.