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If 20% nitrogen is present in a compound, its molecular weight can be

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If 20% nitrogen is present in a compound, its molecular weight can be

(a) 144

(b) 28

(c) 100

(d) 140

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Correct option is (d) 140

The formula of the compound can contain 1, 2, 3 mole atoms of nitrogen.

Minimum mol. mass of the compound = \(\frac{100 \times 14}{20}\) = 70

Mol. mass will either be 70 or multiple of 70.

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