The most active ingredient in bleaching powder is
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What is the other name of sodium carbonate?
What happens as we go down the group in the periodic table?
The gas evolved when sodium carbonate reacts with hydrochloric acid is
The number of days' sales uncollected is calculated by
Metals are placed on which side of the Modern Periodic table?
Common salt (NaCl) is made up of
Delhi is located on the banks of river ___.