Gujarat BoardEnglish MediumSTD 7ScienceWastewater Story1 Mark
MCQ
Chlorine tablet is used to remove $..........$ from waste water.
A
Odour
B
Dark colour
C
Bacteria
✓
All of the above
✓
Answer
Correct option: D.
All of the above
Disinfectants are chemical agents applied to non$-$living objects in order to destroy bacteria, viruses, fungi, or mold living on the objects $i.e.$ to sterilize them. For example $-$ chlorine tablets.
They are made of calcium hypochlorite.
These tablets dissolve in the wastewater, releasing the hypochlorite, which then becomes hypochlorous acid, the primary disinfectant.
Chlorine tablets are used to remove odour, dark colour, and many types of bacteria and viruses from wastewater.
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