Question

Students in a laboratory are told not to taste any chemicals (even common salt) in the laboratory. What is the MAIN reason?
A. The chemicals bought for the laboratory are not pure.
B. Chemicals may have got mixed or wrongly labeled.
C. Chemicals are very expensive and should not be wasted.
D. The chemicals may get spoilt if they are touched.

Answer 1

Answer:

B. Chemicals may have got mixed or wrongly labeled

Answer 2

The option that describes the correct reason in context to this question is option A: The chemicals bought for the laboratory are not pure.

• The chemicals used at schools and colleges' laboratories are primarily intended for teaching and training on the use of chemicals.
• Laboratory grade chemicals are those that are used in laboratories.
• Although this chemical is pure, the preciseness of its impurity is unknown.
• As a result, whether consumed by mouth or directly breathed, it may have detrimental effects on the body.
• These compounds are also often exposed to the environment, making them more impure each time their container is opened.
• Toxic compounds and acids are among the chemicals found in laboratories.
• As a result, any laboratory chemical should not be tasted since it is not sufficiently pure and harmful.