Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Environmental Engineering Solid Waste Management
Which of the following materials are used as landfill sealants for the control of gas and leachate movements?
1) Lime
2) Sand
3) Bentonite
4) fly ash
5) Butyl rubber
Select the correct answer using the codes given below:
1
(1), (2) and (3)
2
(4) and (5)
3
(3) and (5)
4
(1), (2) and (4)