In the contact process, SO2 is passed twice through the catalytic con – McqOptions

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1.	In the contact process, SO2 is passed twice through the catalytic converted. Why?
A.	To produce less while converting to SO3
B.	Since the energy and power consumed is less
C.	To increase the yield
D.	To avoid choking hazards
Answer» D. To avoid choking hazards

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