Water for town supply is chlorinated to make it free from...
Water for town supply is chlorinated to make it free from?
bad odour
bacteria
temporary hardness
permanent hardness
Correct answer is B
No explanation has been provided for this answer.
Which of the following compounds reacts readily with sodium to liberate hydrogen? ...
The following non-metal form acidic oxides with oxygen except? ...
The collision theory proposes that ...
Which of the following ions has an electron configuration different from the other? ...
CU2S(s) + O2(g) → 2CU(s) + SO2(g) What is the change in the oxidation number of copper in the rea...