Question

Give reason for the following :-

1) Temarind is sour to taste.

2) We must not taste any substance without knowing about its chemical nature.

3) Limewater turns milky when we breathe through it.

4) pH of pure water is 7 .

5) Hydrofluoric acid is stored in tenflon bottle & not in a bottle made from glass.

6) Both - soda & acid are used in fire extinguisher.

7) For applying dilute solution of baking soda a bee's sting.
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Answer 1

Answer:

1.It contains tartaric acid

2.Yes because pH value may differ

3.Yes because lime water reacts with carbondioxide

4.Water is neither acid nor base

6.Yes because it produce a base

7.Yes because it neutralise the effect of acid