English

Which of the following is waste water? - Science

Advertisements
Advertisements

Question

Which of the following is wastewater?

Options

  • Water trickling from a damaged tap

  • Water coming out of a shower

  • Water flowing in a river

  • Water coming out of laundry.

MCQ

Solution

Water coming out of laundry.

Explanation:

Water discharged during daily chores-like washing clothes, flushing toilets, washing dishes, bathing etc., becomes dirty. This dirty water is called wastewater. Water trickling from a damaged tap, water coming out of a shower and water flowing in a river are not dirty and hence it is not wastewater.

shaalaa.com
  Is there an error in this question or solution?
Chapter 18: Wastewater Story - MULTIPLE CHOICE QUESTIONS [Page 93]

APPEARS IN

NCERT Exemplar Science [English] Class 7
Chapter 18 Wastewater Story
MULTIPLE CHOICE QUESTIONS | Q 1. | Page 93

RELATED QUESTIONS

Give balanced chemical equation for the reaction of water with Iron . 


Give balanced chemical equation for the reaction of water with Carbon dioxide.


Name the gas produced when chlorine is dissolved in water and exposed to sunlight.


Give one word for the following statement:

A mixture of common salt and ice .


How are natural springs of water formed ?


Give balanced chemical equations to show the reaction between Coke and steam.


How is aquatic life benefited by the fact that water has maximum density at 4oC?


Explain why:

Fused CaCl2 or conc. H2SO4 is used in a desiccator.


Why is it said that water is life?


Give a balanced equation for the following conversion:

Potassium oxide to a strong alkali.


Fill in the blank:

Unpolluted water has _____ amount of dissolved oxygen.


Select the correct word from the words in option to complete the sentence:

Dissolved air in water contains a ____ percentage of oxygen than ordinary air.


Give a reason for the following:

Efflorescence is minimum during humid conditions.


Name the process which is responsible for the formation of droplets on the surface of a glass of cold drink. _______


Nitrogen is used for the treatment of drinking water.


The jumbled word is given here. Write the correct form of each word.

QUIFERA


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

Plants


An open-drain system is a breeding place for which of the following


Match the items of Column I with the items of Column II with reference to sewage.

Column I Column II
(a) Inorganic impurities (i) phosphorus and nitrogen
(b) Organic impurities (ii) nitrates and phosphates
(c) Nutrients (iii) cholera and typhoid
(d) Bacteria (iv) pesticides and herbicides

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×