A. C4H10O2
B. C3H10O2
C. C3H6O3
D. C2H2O4
Correct Answer: Option C
C. C3H6O3
Explanation
(CH2O)n = 90
⇒ (12 + (1 x 2) + 16)n = 90
(12 + 2 + 16)n = 90; ⇒30n = 90;
n = 90/30; n = 3
(CH2O)3 = Molecular formula ; = C3H6O3
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