railway RRB JE (CBT I + CBT II) Mock Test 2024 Environmental Engineering Solid Waste Management

Choose the correct sequence in resource recovery for mixed solid waste

1
Screening → Air classifier → Shredder → Magnetic separation
2
Magnetic separation → Shredder → Screening → Air classifier
3
Shredder → Screening → Air classifier → Magnetic separation
4
Screening → Shredder → Magnetic separation → Air classifier
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