मराठी

Which of the following is waste water?

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प्रश्न

Which of the following is waste water?

पर्याय

  • Water trickling from a damaged tap

  • Water coming out of a shower

  • Water flowing in a river

  • Water coming out of laundry.

MCQ
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उत्तर

Water coming out of laundry

Explanation:

Water discharged during daily chores-like washing clothes, flushing toilets, washing dishes, bathing etc., becomes dirty. This dirty water is called wastewater. Water trickling from a damaged tap, water coming out of a shower and water flowing in a river are not dirty and hence it is not wastewater.

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पाठ 18: Wastewater Story - MULTIPLE CHOICE QUESTIONS [पृष्ठ ९३]

APPEARS IN

एनसीईआरटी एक्झांप्लर Science [English] Class 7
पाठ 18 Wastewater Story
MULTIPLE CHOICE QUESTIONS | Q 1. | पृष्ठ ९३

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Fill in the blank:

Unpolluted water has _____ amount of dissolved oxygen.


Name one substance which is ‘deliquescent’.


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Match Column I with Column II

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(b) Bawri (ii) Wastage of water
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(e) Leaking taps (v) Water table

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From where do the following usually get water? In which form is water present in them?

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From where do the following usually get water? In which form is water present in them?

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Why should we not throw used tea leaves into sink?


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air, handpumps, cholera, water, large, ground

A very ______ number of our people defecate in the open. It may cause ______ pollution and soil pollution. Both the surface water and ______ water get polluted. ______ water is the source for wells, tubewells and ______. Thus it becomes the most common route for ______ borne diseases like ______, dysentery, etc.


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