What happens when blue litmus paper is dipped into chlorine water?
A
Paper becomes red
B
Paper becomes white
C
Paper remains blue
D
Paper dissolves
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Solution
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Correct option is A)
Chlorine water on standing initially gives an amount of hypochlorous acid HOCl. So, the color of the litmus paper will change from blue to red. After some time HCl and HClO3 will be produced and both of them are acidic.