Reason for structural and chemical stability of DNA are
I) Ribose sugar
II) Double stranded
III) Deoxy ribose sugar
IV) Single stranded
V) Having thymine in place of uracil

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II, III, V only

II, III, IV only

I, II, III only

III, IV, V only

answer is A.

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Detailed Solution

Reasons for the structural and chemical stability of DNA are
II) Complementarity and double stranded.
III) Presence of Deoxy ribose sugar where there is no oxygen at the 2' end.
V) Having thymine in place of uracil.

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