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Importance of Salts and Air Dissolved in Water

Why should th...

Question

Why should the mouth of a test tube be pointed away while using it for heating liquids?

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Solution

Accidents can happen even while heating the test tube gently, as the liquid being heated can shoot out of the test tube. [1 Mark]
To avoid accidents, the mouth of a test tube should be pointed away while using it for heating liquids. [1 Mark]

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Q. A ________ is used to hold the test tube while it is heated.

Q. A is used to hold the test tube while it is heated.

(a) wire gauze
(b) pair of tongs
(c) test tube holder
(d) test tube stand

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Importance of Salts and Air Dissolved in Water

Standard IX Chemistry

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