CBSE Questions for Class 7 Chemistry Water A Precious Resource Quiz 3 - MCQExams.com

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
The water table is reduced below the ground due to:
  • continuous use of groundwater
  • increase in rainfall
  • construction of amusement parks
  • increase in pollution
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
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
What are the basic components of a rainwater harvesting and conservation system?
  • Catchment areas
  • Storage units
  • Conveyance mechanism which transports the water falling
  • Sloping roof
The water found below the water table is called _____________.
  • rock water
  • groundwater
  • underwater
  • both B and C
To prevent excessive use of water from taps and tanks, we can collect water from:
  • rain
  • streams
  • rivers
  • sea
Steam rising from wet clothes when ironed is due to ____.
  • condensation
  • evaporation
  • both A and B
  • none of these
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
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 water in the oceans and seas has many ______ dissolved in its.
  • bases
  • iron
  • acids
  • salts
Which of the following is not a method of water conservation? 
  • Rainwater harvesting 
  • Groundwater extraction 
  • Improving irrigation efficiency 
  • Avoiding water wastage​
Which of the following is/are a way/(s) of water conservation?
  • One way of increasing the availability of water is to collect rainwater and store it for later use.
  • One way of increasing the availability of water is to collect rainwater when it is required for use.
  • One way of increasing the availability of water is to collect river water when it is required for use.
  • None of the above.
 With the increase in population, the demand for water has increased.
  • True
  • False
Living beings can survive without water.
  • True
  • False
State true or false.
We must store drinking water in covered containers.
  • True
  • False
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