CBSE Class 10 Science 2019 · Paper 31/1/3/C · Question 2
Suggest two useful ways of utilising waste water.
Answer
Use vegetable-washing water for garden plants, and clothes-washing water to mop floors or flush toilets.
Any two of the following:
(i) Water used for washing vegetables, fruits or rice can be used to water plants in the garden or kitchen garden.
(ii) Water left after washing clothes can be used to mop floors, wash vehicles or flush toilets.
(iii) Sewage can be treated in a sewage treatment plant and the treated water used to irrigate fields.
Any other correct and safe use is also a valid answer.
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