Which one of the following enzymes is used to digest gelatine in the process of recovering silver from the photographic film?
A. Amylase
B. Pepsin
C. Lipase
D. None of these
Answer: Option B
A. Amylase
B. Pepsin
C. Lipase
D. None of these
Answer: Option B
The fibers, such as nylon and polyester, that are made from chemical substances are called:
A. Natural fibres
B. Wool
C. Synthetic fibres
D. Silk
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