CBSE Class 7 Science MCQs-Wastewater Story

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Wastewater Story

1.  The  increasing scarcity of fresh water is due to 

a.  Population growth b.  Pollution c.  Industrial development 

d.  All of the above

2.  Liquid waste consisting of suspended impurities is called

a.  Contaminant  b.  Sewage c.  Aeration d.  Chlorination

3.  WWTP stands for 

a.  Waste Water Therapy Plant b.  Waste Water Treatment Plant

c.  Waste Water Travel Plant  d.  Waste Water Tremendous Plant

4.  Cooking oil and fats should not be thrown down the drain because

a.  They flow through the drain freely  b.  It allows the particles to get filtered

c.  They harden and block the pipe d.  They break the pipe

5.  Better housekeeping practices includes

a.  Cooking oil and fats should not be thrown down the drain

b.  Chemicals like paints, solvents, insecticides should not be thrown the drain

c.  Used tea leaves,solid food , cottonshould not be thrown in the drain

d.  All of the above

6.  Water borne disease is

a.  Diabetes b.  Cancer  c.  Appendicitis  d.  Cholera

7.  A resource much needed for soil is

a.  Septic Tank b.  Chemical Toilet c.  Vermi- Processing Toilet d.  Composing pits

8.  “By providing clean water and sanitation to the poorest people on the planet, we can reduce poverty and suffering and ensure education for all children.”

The above words are given by

a.  UNO  b.  UNICEF c.  UNESCO d.  WHO 

9.  The technique of watering plants by making use of narrow tubings which deliver water directly at the base of the base of the plant is

a.  Lawn sprinkling  b.  Tube wells c.  River-lift irrigation  d.  Drip irrigation

10. Find the one which is a dried –up river

a.  Godavari  b.  Ganga c.  Mahanadi  d.  Arveri  e.  k in colour 

27. ____________failure can be treated by the method of Dialysis. ( )

a.   Heart  b.   Eye  c.   Kidney  d.   Liver

28.  The vascular tissue for the transport of water and nutrients in the plant is called ()

a.  Xylem  b.   Phloem c.   Tissue  d.   Plasma

Please refer to attached file for CBSE Class 7 Science MCQs-Wastewater Story


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