1.

Compound (A) C_(5)H_(10)O forms a phenyl hydrazone and gives negative Tollen's and iodoform tests. Compound (A) on reduction gives n-pentane. Compound (A) is :

Answer»

`CH_(3)CH_(2)CH_(2)CH_(2)-overset(O)overset(||)(C ) - H`
`CH_(3) CH_(2) CH_(2) - overset(O)overset(||)(C ) - CH_(3)`
`CH_(3) CH_(2) - overset(O)overset(||)(C ) - CH_(2)CH_(3)`
`CH_(3) CH_(2) CH_(2) CH_(2) CH_(2) - OH`

SOLUTION :Choice (1)can GIVE tollen.s test as it is an aldehyde and choice (2) can respond to iodoform test as it is a methly ketone. Choice (3) is an alcohol so it cannot form phenyl HYDRAZONE. The only possible OPTION here is choice (3) which can give phenyl hydrazone and also not respond to either tollen.s or Iodoform test


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