SELECT * FROM question_mgmt as q WHERE id=6144 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=11 AND subId=16 AND chapterId=478 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 7th science Wastewater Story why should oils and fats be not released in the dr

Question:

Why should oils and fats be not released in the drain? Explain.

Answer:

Waste cooking oils and fats should not be released in the kitchen sink to go down the drain because cooking oils and facts can block the drainage pipes or system. On the other hand, in an open drains, the fats blocks the soil pores and reduces its effectiveness in filtering water. The waste oils and fats should always be thrown in the dustbin. The oil travelling into waterways can cause water’s oxygen level to drop which can also affects the wildlife living in it. Cooking oils are commonly liquid at room temperature but can get solid at the low temperature if the oils contains fat such as coconut oil, palm oil and palm kernel oil. The oil extracted from plants sources are olives, soybean oil, palm oil, musturd oil, peanut oil and other vegetables oil etc.


SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='11' AND subId='16' AND ex_no!=0 AND status=1 and id!=6144 ORDER BY views desc, last_viewed_on desc limit 0,10
SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='11' AND subId='16' AND ex_no!=0 AND status=1 and id!=6144 ORDER BY last_viewed_on desc limit 0,10

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  • 4 months ago

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  • Answered by Ekta Mehta
  • 4 months ago

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  • Answered by Ekta Mehta
  • 4 months ago

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