INSTRUCTION: From the words lettered A-D choose the appropriate answer
Kerosene and petrol (gasoline) are ____________
A. hydrocarbons, with kerosene having bigger molecules B. hydrocarbons with the same size molecules but of different shape C. Hydrocarbons with petrol having bigger molecules D. compounds of carbon and hydrogen, and sulphur for kerosene, but nitrogen for petrol
Correct Answer: A
Explanation
Petrol contains hydrocarbons with 5 to 10 carbon atoms. These are mainly alkanes and cycloalkanes. Kerosene, on the other hand, contains hydrocarbons with 12 to 18 carbon atoms per molecule (alkanes and aromatics)
