Bleaching powder and bleach solution are produced on a large scale and used in several household products. The effectiveness of bleach solution is often measured by iodometry.

25 mL of household bleach solution was mixed with 30 mL of 0.50 M KI and 10 mL of 4 N acetic acid. In the titration of the liberated iodine, 48 mL of 0.25 N Na₂S₂O₃ was used to reach the end point. The molarity of the household bleach solution is

Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?

Extra very pure N₂ can be obtained by heating

All the compounds listed in Column I react with water. Match the result of the respective reactions with the appropriate options listed in Column II.