Class 7 Science MCQs - Chapter 13
Importance of Water Multiple Choice Questions (MCQs) PDF Download - 9
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The Importance of water Multiple Choice Questions (MCQs) with Answers PDF (importance of water MCQs PDF e-Book) download Ch. 13-9 to study Grade 7 Science Course. Learn Importance of Water Quiz Questions and Answers to learn online certificate courses. The Importance of Water MCQs App Download: Free learning app for distillation, saving water, sewage system, water treatment test prep for online school courses.
The MCQ: For desalination plant, the first priority is; "Importance of Water" App Download (Free) with answers: Reserves of water; Reserves of natural gas; Reserves of oil; Reserves of coal; to learn online certificate courses. Solve Distillation MCQ Questions, download Google eBook (Free Sample) for online education.
Importance of Water MCQs with Answers PDF Download: Quiz 9
For desalination plant, the first priority is
- reserves of natural gas
- reserves of water
- reserves of oil
- reserves of coal
Whether we obtain tap water or water from well, it originally comes from
- sea
- ocean
- river
- rain
For drinking, distilled water is
- suitable
- not suitable
- poisonous
- not preferable
In country area, untreated sewage is pumped into tanks known as
- septic tanks
- sewage tanks
- grit tanks
- sludge tanks
The removal of particles settled at the bottom of a tank is called
- coagulation
- sedimentation
- filtration
- chlorination
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