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NEET UG CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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Which of the following is the correct empirical and molecular formulae of a compound, if the molecular mass of compound is 80 and compound contains 60% of C, 5% of H and 35% of N ?
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Correct option: A
C2H2N ;  C4H4N2{C_2}{H_2}N\,;\,\,{C_4}{H_4}{N_2}
Option A (C2H2N    C4H4N2{C_2}{H_2}N\,\;\,{C_4}{H_4}{N_2}) is correct. The empirical formula is determined from the percentage composition, and the molecular formula is a multiple of the empirical formula based on the molecular mass.

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