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प्रश्न
Which of the following is treated with chlorine to obtain bleaching powder?
(a) CaSO4
(b) Ca(OH)2
(c) Mg(OH)2
(d) KOH
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उत्तर
Ca(OH)2
Bleaching powder (CaOCl2) is formed by passing chlorine gas over slaked lime [Ca(OH)2].
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