CBSE Questions for Class 7 Chemistry Soil Quiz 4 - MCQExams.com

Razia conducted an experiment in the field related to the rate of percolation. She observed that it took 50 min for 200 mL of water to percolate through the soil sample. Calculate the rate of percolation.
  • 5mL/min
  • 4mL/min
  • 20mL/min
  • 25mL/min
Which of the following method is used to let more rainwater percolate and reach the water underground?
  • Deforestation
  • Plantation
  • Both A and B
  • None of these
The type of soil that holds the least water have
  • lower percolation rate
  • higher percolation rate
  • intermediate percolation rate
  • none of these
The rate of water absorption by the soil defines the 
  • Rate of desorption
  • Rate of seeping
  • Rate of percolation
  • Rate of leaching
Cutting of forests_______ the percolation of rainwater.
  • increases
  • reduces
  • does not affect
  • None of the above
Identify 'True' or 'False' for the following statements : 
Sand is an oxide of silicon. 
  • True
  • False
If the volume of the vessel in which the reaction $$2NO+{ O }_{ 2 }\longrightarrow 2N{ O }_{ 2 }$$ is occurring is diminished to $$1/3rd$$ of its initial volume, the rate of the reaction will be increased by
  • $$3$$ times
  • $$9$$ times
  • $$27$$ times
  • $$36$$ times
0:0:1


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