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Preparations and Uses of Caustic Soda

When slaked l...

Question

When slaked lime is treated with chlorine, a compound is formed. Which of the following is correct about that compound?

A

It is used in bleaching cotton.

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B

It is used as disinfectant.

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C

It is a halide.

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D

It is used for sterilization of water.

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Solution

The correct options are
A It is used in bleaching cotton.
B It is used as disinfectant.
C It is used for sterilization of water.
Calcium hydroxide react with chlorine to give calcium hipochlorite, calcium chloride and water. Calcium hipochlorite which is formed in the reaction is used as bleaching agent, disinfevtant and in the sterilization process.

$2 C a (O H)_{2} + 2 C l 2 \to C a (C l O)_{2} + C a C l_{2} + 2 H_{2} O$ .
Hence option A,B,C are correct.

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