Which of the following statements are correct?
(i) Chitin, a complex homopolysaccharide occuring in exoskeleton consists of NAG
(ii) Glucosamine and N – acetyl glucosamine are modified sugar.
(iii) Cellulose shows blue colour when treated with I₂ .
(iv) Starch in plants and glycogen in animals are store houses of energy
(v) Right end of polysaccharide is called reducing end while left end is called nonreducing end.

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All except (v)

(i), (ii) and (iii)

(iii), (iv) and (v)

All except (iii)

answer is C.

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Detailed Solution

Chitin is a complex homopolysaccharide present in cell wall of fungi and exoskeleton of arthropods. Glucosamine and N-acetylglucosamine are modified sugars (amino sugars), Cellulose doe not show blue color upon treating with I₂KI solution. Starch and Glycogen are storage polysaccharides. Right end of a polysaccharide if reducing and left end is non-reducing end

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