1. 2-butenal is a dehydration product of a beta-hydroxyaldehyde that was initially obtained by the simple aldol condensation of:
a) Butanal
b) Pentanal
c) Propanal
d) Formaldehyde
e) Ethanal

2. A carboxylic acid is suspected in an unknown sample when the following reaction is positive:
a) with iodoform, a yellow precipitate
b) with Tollen's gives a silver mirror
c) with 2,4 DFH gives an orange precipitate
d) bubbling with NaHCO3

Answer rating: 100% (QA)

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