a) Lyophilization
b) Karl Fischer method
c) Halogen drying
d) Infrared drying
Answer: b
Explanation: Karl Fischer Method of moisture measurement is based on chemical reactions. A chemical reaction happens where the water is separated chemically from the rest of the sample. The water is then moved to other cell where it is measured. That measurement is equated with the initial mass of the sample and then moisture content is calculated.
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