Class VI

How much water is lost approximately through transpiration by wheat plants that give us one kilogram of wheat?
  1. 5 litres
  2. 50 litres
  3. 500 litres
  4. 5000 litres
When ice water is pored into a glass, tiny water droplets of water appear on the outerside of glass due to _________.
  1. Condensation
  2. Evaporation
  3. Sublimation
  4. Transpiration
Which of the following is purest form of water?
  1. Rain water
  2. Sea water
  3. Lake water
  4. River water
Which of the following will lead to reduction in availability of ground water?
  1. Plantation
  2. Rain water harvesting
  3. Constructing more lakes
  4. Building concrete roads
Water freezes at ____ to solid state called snow or ice.
  1. 0°C
  2. 10°C
  3. 25°C
  4. 100°C
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