Answer:
increase the temperature of the oil
Explanation:
One of the ways petroleum is refined by increasing the temperature of the oil. This process is known as thermal cracking.
Thermal cracking is the process by which petroleum or crude-oil is subjected to high temperature to break down their long chains.
- Also, this reduces the giant hydrocarbon into simpler ones.
- The fractions now have lower boiling point and can readily be used.
