Bleaching of a fabric cloth is done using A and excess of chlorine is removed using B. Here A and B are respectively:

C a O C l_{2}

and

N a_{2} S O_{3}

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N a_{2} S_{2} O_{3}

and

C a O C l_{2}

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C a C l_{2}

and

N a_{2} S_{2} O_{3}

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C a O C l_{2}

and

N a_{2} S_{2} O_{3}

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Solution

The correct option is D $C a O C l_{2}$ and $N a_{2} S_{2} O_{3}$
$C a O C l_{2}$ acts as bleaching agent, while $N a_{2} S_{2} O_{3}$ acts as antichlor according to the following reaction:
$C a O C l_{2} + H_{2} O \to C a (O H)_{2} + C l_{2}$
$N a_{2} S_{2} O_{3} + 4 C l_{2} + 5 H_{2} O \to 2 N a H S O_{4} + 8 H C l$

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Similar questions

A

B

A

B

$(C H_{3} C O O)_{2} P b + C a (O H)_{2} \to A + (C H_{3} C O O)_{2} C a$

$A + C a O C l_{2} \to B + C a C l_{2} + H_{2} O$

Identify A and B.

C a O C l_{2}

$2 C a (O H)_{2} + 2 C l_{2} \to A - - + B - - + 2 H_{2} O$

A & B are

N a_{2} S_{4} - - - O_{6}, N a_{2} S_{2} - - - O_{3}, C a O C l_{2} - -- -, N_{2} - - - H_{4} O_{3}, F e_{3} - -- - O_{4}, K I_{3} - -, C r O_{5} - - -, K_{2} C r_{2} - -- - O_{7}

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