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Subject :NSO    Class : Class 8

When petroleum is heated in a fractionating column, various gaseous fractions are condensed according to their boiling points.
Which of the following fractions will condense near the top of fractionating column?

APetrol
BDiesel oil
CFuel oil
DKerosene


Ans 1:

Class : Class 9

Ans 2:

Class : Class 8

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