What is the acceptable safe limit of Arsenic per litter of water ?

1. 0.01 mg
2. 0.001 mg
3. 0.20 mg
4. 0.02 mg

Answer: 0.01 mg

Explanation: Permitted level of arsenic in drinking water is 0.05 mg/litre, as per WHO. Bureau of Indian Standards gives the acceptable limit of arsenic in drinking water to 0.01 mg/litre and in absence of other alternative sources to 0.05 mg/litre.