engineering recuitment BPSC Assistant Sanitary & Waste Management Officer Mock Test 2022 Environmental Engineering Solid Waste Management
For estimating the bulk density of Municipal Solid Waste compost, the compost sample should be:
1
dried in a hot air oven at 70°C for 24 hours
2
dried in a hot air oven at 70°C for 12 hours
3
dried in a hot air oven at 103°C for 24 hours
4
dried in a hot air oven at 103°C for 12 hours