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Q.

Which of the following organic compounds exhibits positive Fehling test as well as iodoform test?

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a

Methanal

b

Ethanol

c

Propanone

d

Ethanal

answer is D.

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Detailed Solution

The Compound which contains -COCH3 group in its structure, gives positive Iodoform test and  compound contains -CHO group gives positive Fehling test.Ethanal(CH3CHO), have both the groups and exhibits both the tests.CH3CHO+I2+NaOH →CHI3Iodoform CH3CHO+Cu(OH)2→CH3COOH+CuO↓Red ppt.+2H2O
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