Answers

2015-11-28T11:47:46+05:30
Olfactory indicators can be used to engage visually impaired students in laboratory work.Olfactory indicators are those which identify acids and bases through smell or odour.  Olfactory indicators can be used in the laboratory to test whether a solution is a base or an acid, a process called olfactory titrationOnion , clove oil and vanilla extract are examples. They lose their smell with bases but not with acids.
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