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Permanent hardness of water can be removed by adding

1 Potassium permanganate

2 Chlorine

3 Bleaching powder

4 Washing soda

Answers were Sorted based on User's Feedback



Permanent hardness of water can be removed by adding 1 Potassium permanganate 2 Chlorine 3 ..

Answer / guest

(4) Washing soda

Is This Answer Correct ?    73 Yes 12 No

Permanent hardness of water can be removed by adding 1 Potassium permanganate 2 Chlorine 3 ..

Answer / suganthi

washing soda

Is This Answer Correct ?    45 Yes 11 No

Permanent hardness of water can be removed by adding 1 Potassium permanganate 2 Chlorine 3 ..

Answer / mihi bauli

4)Washing soda

Is This Answer Correct ?    13 Yes 3 No

Permanent hardness of water can be removed by adding 1 Potassium permanganate 2 Chlorine 3 ..

Answer / boopathi

washing soda

Is This Answer Correct ?    0 Yes 0 No

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