Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) People Development & Environment Environmental Issues
Dewatering of sewage sludge can be achieved by
A. Gravity thickening
B. Mechanical stirring
C. Osmosis
D. Floatation
E. Screening
Choose the correct answer from the options given below:
1
A, B and D only
2
B, C and E only
3
A, C and D only
4
C, D and E only