Question

Classify the given contaminants as biological, chemical or physical. :
1. Mouldy peanuts
2. Staphylococci
3. Washing soda
4. Stapler pins

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Answer 1

Explanation:

1. chemical

2. biological

3. chemical

4. physical

Answer 2

Answer:

Mouldy peanuts-biological, as there is develpoment of mould, a living organism

staphylococci-biological, as it is a pathogen bacteria, a living organism

washing soda- chemical, as there requires chemical means for separation.

stapler pins- Physical, as it can be removed by physical means

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