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Why should we not throw used tea leaves into sink? - Science

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प्रश्न

Why should we not throw used tea leaves into sink?

लघु उत्तर
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उत्तर

Used tea leaves should not be thrown in kitchen sinks as they clog drains and prevent the free flow of oxygen that interferes with the decomposition process. They should be thrown in dustbins.

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पाठ 18: Wastewater Story - SHORT ANSWER QUESTIONS [पृष्ठ ९५]

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एनसीईआरटी एक्झांप्लर Science [English] Class 7
पाठ 18 Wastewater Story
SHORT ANSWER QUESTIONS | Q 18. (a) | पृष्ठ ९५

संबंधित प्रश्‍न

Give one word  for the following statement:

The harmful substances dissolved in water .


Give any three important uses of water.


Explain how the peculiar variation of density of water with temperature can cause water— pipes to burst in very cold places.


Answer the following question:

Why is acid added to water before electrolysis ?


Complete the statement by filling the blank with the correct word from the option.

The ratio of hydrogen & oxygen in water is ____.


Fill in the blank:

The sample of hard water which lathers with soap after boiling and filtration contains _____.


Name or state the following:

A deliquescent salt of a trivalent metal.


Which are the three states of water?


Water is the most ________ resource on the Earth.


Which state government made rain water harvesting mandatory in the year 2001?


Among the given options, which one is not correct for the use of large amounts of fertilisers and pesticides?


State whether the following statement is True or False. If false, give the correct statement.

51% of the earth’s surface is covered with water


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

Animals


Open drain system is a breeding place for which of the following?


Animal waste, oil and urea are some of the organic impurities present in sewage. Name two more organic impurities present in sewage.


Why should we not throw cooking oil and fats down the drain?


Think and suggest some ways to minimise waste and pollutants at their source, taking your home as an example.


What is saltwater?


In which one of the following state's water is present on Earth?


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