Which of the mentioned are the principal constituents of an organic compound?
A. Carbon, Oxygen and Nitrogen
B. Carbon, Oxygen and Hydrogen
C. Carbon, Oxygen and Sulphur
D. Carbon, Oxygen and Sulphur
Answer:B
Which of the mentioned are the principal constituents of an organic compound?
A. Carbon, Oxygen and Nitrogen B. Carbon, Oxygen and Hydrogen C. Carbon, Oxygen and Sulphur D. Carbon, Oxygen and Sulphur