In the contact process, SO2 is passed twice through the catalytic conv – 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 SO<sub>3</sub>
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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