Water for town supply is chlorinate to make it free from<...
Water for town supply is chlorinate to make it free from
bad colour
bacteria
temporary hardness
permanent hardness
Correct answer is B
Chlorine helps to keep water from germs and bacteria.
When steam is passed over red hot carbon the substances produced are ...
The gas responsible for most of the fatal explosions in coal mines is...
A chemical widely used as a fertilizer is? ...
The type of isomerism shown by cis- and trans- isomers is ...
Which of the following electrodes is used in electrolysis of bauxite (Al2O3) in molten cryolite? ...
Which of the following pairs of substances has the highest heat of neutralization? ...