Question

True/False
1. Sewage is a solid waste which causes water pollution and soil pollution. [NCERT Exemplar]
2. Used water is wastewater.
3. Wastewater could be reused.
4. Where underground sewerage systems and refuse disposal systems are not available, the high cost onsite sanitation system can be adopted. [NCERT Exemplar]
5. We should not defecate is open because untreated human waste is a health hazard.
6. Cooking oil, fats should not be thrown in the drainage system directly.
7. Microorganisms are present in the domestic waste also.
8. Poor sanitation and contaminated drinking water is the cause of a large number of diseases.
9. Wastewater is transparent, colourless, odourless.
10. Tuberculosis is a water-borne disease.
11. Aerobic bacteria produces biogas sludge in the digester tank.
12. urea is an inorganic impurity present in sewage.

Answer 1

Explanation:

Here is ur answer

1. False because sewage is water waste.

2. True because when we used something ,it becomes waste but we can use it according to our desire.

3. True ( it is already explained in 2nd question).

4. False because sanitation system follow the principal of underground sewage system.

5. True because through air and through insects ,it leads to many harmful disease.

6. True

7. True because Microorganisms are present everywhere. Hence,we cannot thought any place which has not Microorganism.

8. True because it contains Microorganism.

9. False because wastewater is colourful, odour- ful and opaque.

10. False because Tuberculosis is not caused due to water ,it is caused due to air.

11. True

12. False because it is organic material which is present in the sewage.

Hope it will help you

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Answer 2

Answer:

1. false
2. true
3. true
4. false
5. true
6. true
7. true
8. true
9. false
10. false
11. true
12. false

Explanation: