Bleaching of a fabric cloth is done using A and excess of chlorine is removed using B. (A) and (...

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Bleaching of a fabric cloth is done using A and excess of chlorine is removed using B. (A) and (B) are:
(a) \( \mathrm{CaOCl}_{2}, \mathrm{Na}_{2} \mathrm{SO}_{3} \)
(b) \( \mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}, \mathrm{CaOCl}_{2} \)
(c) \( \mathrm{CaCl}_{2}, \mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3} \)
(d) \( \mathrm{CaOCl}_{2}, \mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3} \)
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