| (i) Nitrogen bases are open chain hydrocarbons. |
| (ii) A nucleoside differ from nucleotide in not having phosphate. |
| (iii) One turn of B-DNA has ten base pairs. |
| (iv) Length of one turn of DNA is 3.4 A. |
A) (i) and (ii) are correct.
B) (i) and (iv) are correct.
C) (ii) and (iii) are incorrect.
D) (i) and (iv) are incorrect.
Correct Answer: D
Solution :
[d] Nitrogen bases are heterocyclic compounds. Length of one turn of DNA is 34A.
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