railway RRB JE (CBT I + CBT II) Mock Test 2024 Environmental Engineering Water Treatment Disinfection
Consider the following statements and identify the correct answer.
Statement I: For inland surface water, the maximum permissible limit for total residual chlorine is 1.0 mg/l.
Statement II: In the case of public sewers, the maximum allowable concentration of arsenic (as As) is 0.2 mg/l.
1
Both Statement I and Statement II are true.
2
Statement I is true, but Statement II is false.
3
Statement I is false, but Statement II is true.
4
Both Statement I and Statement II are false.