$$ \text { The structure given below is an example of } $$
I. A condensation and biodegradable polymer.
II. A biodegradable and thermoplastic polymer.
III. A biodegradable and thermosetting polymer.
IV. A polyester and thermoplastic polymer.
- Which of the following statements support the cyclic form for glucose?
(i) It doesn't give Schiff's test.
(ii) It is found to exist in two different crystalline forms.
(iii) It oxidises with nitric acid to give saccharic acid.
(iv) Pentaacetate of glucose doesn't react with hydroxylamine.
$$ \text { The structure of paracetamol is } $$
Arrange the following in the correct order of reactivity towards nucleophilic substitution reaction.
I. 1-chloro-2-nitrobenzene
II. Chlorobenzene
III. 1-chloro-3-nitrobenzene
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