Permanent hardness of water can be removed by adding
1 Potassium permanganate
2 Chlorine
3 Bleaching powder
4 Washing soda
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Indian Formula-1driver Narain Kathikeyan was associated with which team? 1 Mercedes 2 Ferrari 3 Honda 4 Jordan
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7 Answers BITM, Civil Service, HCL, HCS, HPSC Haryana Public Service Commission, IAS,
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16 Answers KPSC Karnataka Public Service Corporation,