Environmental Engineering
The disinfection efficiency of chlorine increases by (i) Decreasing the time of contact (ii) Decreasing the temperature of water (iii) Increasing the temperature of water

Only (i)
Both (i) and (iii)
Only (iii)
Both (i) and (ii)

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
Double filtration is used

For isolated buildings like pools, hotels etc swimming
To increase the filtration slow sand filters capacity of
To increase the filtration rapid sand filters capacity of
All of these

ANSWER DOWNLOAD EXAMIANS APP