Question

Addition of which of the following has harmful effect in the process of filtration of water?

Code:

• A. 1 and 2
• B. Only 2
• C. 1, 2 and 3
• D. None of these

Answer 1

The correct option is D

None of these

All are used in Superior water filtration.

Silver- leaches in water and when the ions so released kill the bacteria by destroying the integrity of the cell and by damaging the cell proteins and terminating the DNA replication.

Titanium oxide- also kills bacteria. Though its antibacterial property is best in the presence of UV light, the present study did not use UV light.

Carbon Nanotubes- kill the bacteria through direct physical contact—and the roughness of the nanotubes also kills the bacteria.