Choose the correct statements
A. Temperature has a effect in disinfection treatment of water.
B. pH controls the amount of HOCI and OCI in water.
C. Cl2 gas used for disinfection forms HCl as a product in water.
D. Disinfection action is because of HOCI formed and not due to Cl2 gas.
E. Combined chlorine exist in water due to combination of HOCI with NH3 and organic compounds.
Choose the correct answer from the options given below:
1
A, C and E only
2
B, C and D only
3
A, B, C, D and E
4
A, B, C and D only