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Question

Cooking oil should not be thrown down the drain because

A
They do not allow free flow of oxygen.
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B
They do not allow bacteria to decompose waste.
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C
They block the drainage pipes.
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D
None of the above.
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Solution

The correct option is C They block the drainage pipes.
  • All the cooking oils should not be thrown in drains because it can harden and block the pipes. In an open drain, the fats clog the soil pores reducing its effectiveness in filtering water.
  • Throw oil and fats in the dustbin.
  • Hence Cooking oil should not be thrown down the drain because they block the drainage pipes.
  • So, the correct answer is 'They block the drainage pipes'.

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