Calculations of Empirical Formulae and Molecular Formulae NEET Questions

Organic Chemistry - Purification and Characterization of Organic Compounds

Calculations of Empirical Formulae and Molecular Formulae MCQ Questions


7.
A compound contains 40% carbon, 6.67% hydrogen, and 53.33% oxygen. The empirical formula of the compound is:
A.
CH4O
B.
C2H4O
C.
C2H6O2
D.
CH2O
😑 View Answer Rough Work Error
ANSWER :
D. CH2O
8.
An organic compound has 92.3% carbon and 7.7% hydrogen. Its empirical formula is:
A.
CH
B.
CH2
C.
C2H2
D.
C2H
😑 View Answer Rough Work Error
ANSWER :
A. CH
9.
A compound contains 26.67% C, 2.22% H, and 71.11% O. Its empirical formula is:
A.
C2H2O4
B.
CHO
C.
CH2O2
D.
CHO2
😑 View Answer Rough Work Error
ANSWER :
D. CHO2
10.
A compound contains 75% carbon and 25% hydrogen. Its empirical formula is:
A.
CH3
B.
C2H4
C.
CH4
D.
CH2
😑 View Answer Rough Work Error
ANSWER :
C. CH4
11.
An organic compound on analysis gave the following result: C = 54.55%, H = 9.09%, O = 36.36%. The empirical formula is:
A.
C2H4O
B.
C3H6O
C.
C2H6O
D.
CH2O
😑 View Answer Rough Work Error
ANSWER :
A. C2H4O
12.
A compound contains 80% carbon and 20% hydrogen. The empirical formula is:
A.
CH4
B.
CH3
C.
CH2
D.
C2H6
😑 View Answer Rough Work Error
ANSWER :
B. CH3