A. 42
B. 45
C. 126
D. 180
Correct Answer: Option D
Explanation
Molecular formula = (empirical formula x n)
where n= (1,2,3,…)
CH2O=12+(2×1)+16=30
Relative molecular mass = (30 x n)
From the options, only 180 is a multiple of 30, when n=6.
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