engineering recuitment BPSC Assistant Sanitary & Waste Management Officer Mock Test 2022 Environmental Engineering
Which one of the following statements are correct ?
1. Gray water is reusable wastewater from residential, commercial & industrial bathroom sinks, and bathtub shower drains.
2. Gray water is reusable wastewater from the cement industry.
3. Gray water is used onsite for landscape irrigation.
1
1 and 3
2
2 and 3
3
Only 1
4
All of the above