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The nitrogenous organic base purine occurring in RNA is (a) Cytosine (b) Thymine (c) Guanine (d) Uracil

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The nitrogenous organic base purine occurring in RNA is

(a) Cytosine

(b) Thymine

(c) Guanine

(d) Uracil
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Correct option  (c) Guanine 

Explanation : 

Purines are 9-membered double ring nitrogen bases which possess nitrogen at 1, 3, 7 and 9 positions, e.g. adenine (A), guanine (G). These purines are present in both DNA and RNA.

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