In our municipal drinking water, under purification and supply scheme, chlorine is added to water because
A
Chlorine gives sweat taste to water.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Chlorine kills harmful bacteria.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
Chlorine cools water.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Chlorinated water is now a days fashionable.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is B Chlorine kills harmful bacteria. Chlorine is used for municipal drinking water purification. It is a strong oxidizing agent, hence it kills pathogenic bacteria by oxidation of organic molecules. Chlorine on hydrolysis produces hypochlorous acid that penetrates the pathogenic surface and disintegrates lipids in its cell wall. It also reacts with intracellular enzymes and proteins and deactivates them. Hence chlorination is used to prevent the spread of waterborne diseases such as cholera, dysentery and typhoid. Thus the correct answer is option B.