Which of the Following in NOT a Step in Fractional

question 34

Multiple Choice

Which of the following in NOT a step in fractional distillation of crude oil?

• A)The crude oil is pumped into a large vessel and heated.
• B)As the temperature increases,the compounds vaporize.
• C)Fractions are mixed with natural gas to enrich the hydrocarbon content.
• D)Once in the gas phase,compounds travel up the tall distillation or fractionation tower.The compounds with smaller molar masses travel higher;the compounds with larger molar masses travel shorter distances up the column

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