Question

The following questions are multiple choice questions. Choose the most appropriate answer:
(i) Which of the following have free carbonyl group to give brick red ppt with Fehling's
solution?
(a) glucose
(b) fructose
(c) Both (a) and (b)
(d) None of the above
(ii) Which of the following is not the reason for the cosmetic properties in monosaccharides?
(a) Structure
(b) Arrangement
(c) High content of hydrophilic groups
(d) Carbonyl group
OR
Which property of monosaccharides give them cosmetic relevance?
(a) Thinning
(b) Whitening
(C) Emollient
(d) Non-sticky
(iii) Which of the following is a monosaccharide with five-carbon atoms?
(a) L-arabinose
(b) Fructose
(C) Mannose
(d) Galactose​

Answer 1

Answer:

I)c)both (a) and (b)

ii)c)Emollient

iii)a)L-arabinose

Answer 2

Answer:

1.H-O∣C- group Fructose gets converted into glucose in basic medium which reponds to Fehling's solution test due to presence of -CHO group.

Solution : Because acetone require stronger oxidizing agent and hence not oxidized with Fehling solution to give brick red ppt.