Students in a laboratory are told not to taste any chemicals (even common salt) in the laboratory. What is the MAIN reason?
A b The chemicals used in the laboratory are not pure.
B Chemicals may have got mixed or wrongly labelled.
C Chemicals are very expensive and should not be wasted.
D The chemicals may get spoilt if they are touched.
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Answer:
A) Chemical used in lab are impure
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Answer:
its a................
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