CBSE Class 7 - Science - CH 8 - Wastewater Story (MCQs)

Wastewater Story 


Waster Water Treatment WorkflowLeonard G. at English Wikipedia [CC BY-SA 2.5 (http://creativecommons.org/licenses/by-sa/2.5)], via Wikimedia Commons



MCQs based on NCERT Chapter

Q1: The light materials which float during waste water treatment is

(a) sludge
(b) scum
(c) sewerage
(d) biogas



Q2: Which of the following is produced during waste water treatment?

(a) sludge