Question

1.Why does bleaching powder give smell of chlorine?

2. When a pencil is partly immersed in water and held obliquely to the surface, the pencil appears
to be bent at the water surface. Why?​

Answer 1

Answer:

We already know, the chemical name of bleaching powder is Calcium hypochlorite and the chemical formula of bleaching powder is Ca(OCl)2. It is also known as Chloride of lime. It is a pale yellowish powder which gives a strong smell of chlorine gas. ... It loses chlorine by the action of carbon dioxide.

When a pencil is partly immersed in water and held obliquely to the surface, the pencil appears to bend at the water surface. Reason: The apparent bending of the pencil is due to the refraction of light when it passes from water to air.

Explanation:

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Answer 2

Answer:

1.When exposed to air bleaching powder gives a smell of chlorine. This is because bleaching powder reacts with carbon dioxide from the atmosphere to produce calcium carbonate and chlorine gas.

2.Assertion: When a pencil is partly immersed in water and held obliquely to the surface, the pencil appears to bend at the water surface. Reason: The apparent bending of the pencil is due to the refraction of light when it passes from water to air.