Ultra violet rays used for the treatment of water is known as:
ADechlorination
BDisinfection
CAeration
DBleaching
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
In reciprocal levelling
The imaginary line joining the point of same elevation in the ground
Transient disturbances are due to :
A frame or truss is said to be perfect, if it satisfies the equation where 'n' is the members and 'j' is the number of joints in the frame
The annual conference of Indian National Congress 1920 was met at