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Question

Priya poured a litre of water into a pot filled with garden soil. The pot had a hole at its base through which water seeped out and was collected in a beaker. After a while, she measured the amount of water in the beaker and found it to be 450 ml. Find the percentage of water absorption of the soil if it weighed 1.5 kg in the pot.


Solution

Priya pours 1 litre of water into the pot. Therefore, Priya pours in 1000 ml of water.

The amount of water seeped out is 450 ml.
Therefore, 1000 - 450 = 550 ml is retained by the soil.

The weight of soil is 1.5 kg = 1500 g.

Percentage of water absorbed  = 5501000× 100 = 55%
                                        
Water absorbed as a percentage of soil weight = 5501500 × 100 = 36.67%                                                                                                                                 

Science
Science in Everyday
Standard VII

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