Class 7 Science MCQs - Chapter 14
Importance of Water Multiple Choice Questions (MCQs) PDF Download - 13
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The Multiple Choice Question (MCQ Quiz): In sewage treatment plants, large material is removed by; "Importance of Water" App Download (Free) with answers grit tank, metal screen, sludge tank and filter bed to learn online courses. Solve sewage system quiz questions, download Google eBook (Free Sample) for online elementary school courses.
Importance of Water Questions & Answers PDF Download: MCQ Quiz 13
MCQ 61: In sewage treatment plants, large material is removed by
- metal screen
- grit tank
- sludge tank
- filter bed
MCQ 62: Desalination plants are used to convert
- hot water to cold water
- cold water to hot water
- tasteless water to salty water
- salty water to tasteless water
MCQ 63: The population which does not have tap water in their homes, is
- two-third of the world population
- one-third of the world population
- half of the world population
- quarter of the world population
MCQ 64: Water can be kept clean by detergents, if they are
- not poisonous
- odorless
- biodegradable
- non biodegradable
MCQ 65: 'Distillation' can also be used to treat
- fresh water
- sewage water
- polluted water
- rain water
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Importance of Water MCQ Book Questions
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