Higher boiling fractions like atmospheric residue is distilled under v – McqOptions

MCQOPTIONS

1.	Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of
A.	Thermal cracking
B.	Gum formation
C.	Coking
D.	Discoloration
Answer» D. Discoloration

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