Identify the statements which are not correct from the following: a) In the structure of ice each oxygen…
Identify the statements which are not correct from the following:
a) In the structure of ice each oxygen atom is surrounded by 4 other ' $\mathrm{O}$ ' atoms
b) Temporary hardness of water is due to dissolved $\mathrm{NaHCO}_3$
c) In the reaction of acidified $\mathrm{KMnO}_4$ and $\mathrm{H}_2 \mathrm{O}_2, \mathrm{H}_2 \mathrm{O}_2$ acts as oxidising agent
d) $3 \mathrm{gL}^{-1} \mathrm{H}_2 \mathrm{O}_2$ is equal in strength to 100 volume $\mathrm{H}_2 \mathrm{O}_2$