CBSE Questions for Class 6 Chemistry Water Quiz 3 - MCQExams.com

Where can rain water harvesting be implemented?
  • Drawing room 
  • School classroom
  • Rooftop
  • All of these
State true or false.
Well water is an example of surface water.
  • True
  • False
A man digging the ground near a water body found that the soil was moist. As he kept digging deeper and deeper he reached a level where all the spaces between particles of soil and gaps between rocks were filled with water. The upper limit of this layer is called:
  • Water level
  • Groundwater
  • Water table
  • Water limit

The process by which water from the surface of the earth moves to the atmosphere is:
  • Cooling
  • Distillation
  • Evaporation
  • None of the above
As the rain water is the purest form of water, this can be used in lab due to:
  • presence of ions
  • absence of ions
  • smells good
  • easily available
Water found in wells :
  • is surface water
  • is underground water
  • contain distilled water
  • contain ice
Well water is an example of:
  • surface water
  • rain water
  • underground water
  • river water
Water vapour condenses to form tiny droplets of water in the upper layers of air where it is cooler.
  • True
  • False
"Catch it where it falls" is the basic idea behind:
  • making dams to store water
  • recycling of water
  • rainwater harvesting
  • condensation of water vapour
Rainwater can be used to recharge the groundwater. This is referred to as:
  • infiltration
  • drip irrigation
  • rainwater harvesting
  • None of these
 Which of the following is not a source of potable water?
  • Well
  • River
  • Lake
  • Sea
Which of the following is correct?
  • Ocean water is fit for agricultural and industrial needs
  • Oceans play an important role in supplying the water that we use
  • Ocean water is not saline
  • None of the above
Where can rainwater harvesting not be practised?
  • Playground
  • Rooftops
  • Bathroom
  • Can be used in all of the above
Which of the following situations is classified as suffering from water scarcity?
(a) Region with high annual rainfall.
(b) Region having low annual rainfall and large population.
(c) Region having high annual rainfall but water is highly polluted.
(d) Region having low rainfall and low population. 
  • a and b
  • a and d
  • c and d
  • b and c
The water in the oceans and seas has many ______ dissolved in its.
  • bases
  • iron
  • acids
  • salts
What reduces water quality?
  • Temperature
  • Nutrients
  • Water vapours
  • Waste products
Which of the following is true about rooftop rainwater harvesting?
  • The rainwater is transferred from the rooftop to a storage tank, present above the ground, through pipes.
  • This water may contain soil from the roof and need filtering before it is used.
  • Instead of collecting rainwater in the tank, the pipes can go directly into a pit in the ground.
  • All of the above.
Rainwater harvesting is collecting & storing rainwater, which includes activities aimed at:
  • harvesting surface water
  • groundwater
  • prevention of losses through evaporation and seepage
  • all of the above
 With the increase in population, the demand for water has increased.
  • True
  • False
Living beings can survive without water.
  • True
  • False
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