Single Choice

Bleaching powder is prepared from:

Acaustic potash
Bcaustic soda
Cslaked lime
Correct Answer
Dmagnesium chloride

Solution

Bleaching powder is prepared on a large scale basis by passing chlorine gas through a solution of calcium hydroxide ($$Ca(OH)_2$$) which is commonly called slaked lime.
The reaction that occurs is $$Ca(OH)_2 + Cl_2(g) \rightarrow Ca(OCl)_2 + CaCl_2 + 2H_2O$$.
Bleaching powder is mainly used for bleaching papers and sterilizing water.

SIMILAR QUESTIONS

p - block Elements

The reaction between $$H_{2}$$ and $$Cl_{2}$$ in direct sun light is explosive.

p - block Elements

In paper industry, the chemical compound used for bleaching is :

p - block Elements

Chlorine gas bleaches moist litmus paper.

p - block Elements

Yellow color of chlorine water fades because of?

p - block Elements

A black powder when heated with conc. HCl gives a greenish yellow gas. The gas acts as an oxidizing and a bleaching agent. When it is passed over slaked lime, a white powder is formed which is a ready source of gas. The black powder and white powder respectively are:

p - block Elements

Account for the following: Bleaching of flowers by chlorine is permanent while that by sulphur dioxide is temporary.

p - block Elements

Account for the following: a. $$BiH_{3}$$ is the strongest reducing agent in Group $$15$$ elements hydrides. b. $$Cl_{2}$$ acts as a bleaching agent. c. Noble gases have very low boiling points.

p - block Elements

On heating with bleaching powder, ethyl alcohol is converted into:

p - block Elements

Bleaching powder is insoluble in cold water.

p - block Elements

Bleaching action of chlorine is by:

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