Papers containing ____________ that reduce CUSO4 might be utilized, p – McqOptions

MCQOPTIONS

1.	Papers containing ____________ that reduce CUSO4 might be utilized, provided the total reducing power of the additives is known and no more than about 75% of the total reducing power of the sheet.
A.	ZnS and CaSO4
B.	ZnSO4 and CaCO3
C.	CaCO3 and MnO2
D.	ZnS and CO2
Answer» B. ZnSO4 and CaCO3

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