MEDIUMMCQ SINGLENEET ChemistryOrganic ChemistryAldehydes and ketonesPrevious Year Questions
Which of the following organic compounds answers both iodoform test Fehling’s test? (KCET 2013)
A.Methanal
B.Ethanol
C.Propane
D.Ethanal✓ Correct
Explanation
Iodoform test is given by those compounds which contains 3 CH C || O group or 3 CH CH | OH groups while Fehling’s test is given by only aldehydic group. Thus, iodoform test and Fehling’s test are performed by only ethanal. fehling's 2 3 dest 3 2 2 NaOH 3 3 CH CHO 2Cu 50H Ethanal Fehling's solution CH COO 3H O Cu O Acetateion Cuprousoxide (redppt.) O || CH CHO H C O Na CHI -> -> 28. Which of the follwing reactions cannnot be used to increase the number of carbon atoms in a organic comound? (UK PMT2014) (a) Grignard reaction (b) Cannizzaro’s reaction (c) Ald
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