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QUESTION
3. In which pair of hydrocarbons does eacg compound contain only one doube bond per molecule?
3. In which pair of hydrocarbons does eacg compound contain only one doube bond per molecule? (a) C2H2 and C2H6 (b) C2H2 and C3H6 (c) C4H8 and C2H4 (d) C6H6 and C7H8
4. Which element is present in all organic compounds (a) Nitrogen (b) Oxygen (c) Carbon (d) Phosphorus
