railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) General Science Chemistry Chemical Reaction
Bleaching powder, represented as CaOCl2, is prepared by which of the following methods?
1
By reaction of chlorine with dry calcium oxide
2
By reaction of water with calcium chloride
3
By reaction of chlorine with dry calcium hydroxide
4
By reaction of calcium with water and chlorine