A student put 100g of soil in a filter paper fitted on a funnel. He then clamped the funnel over a beaker. He then took 200 ml of water and added it to the funnel very slowly. He noticed after pouring 100ml of water that water started dripping out. He then poured rest of the water. It took
20 minutes for water to percolate and a total of 100 ml of water got collected in the beaker. a. What is the percentage of water absorbed?b. What is the rate of percolation of water?Need it fast

Open in App

Solution

About 200ml water was added from which only 100ml get collected in the beaker. The remaining 100ml of water has got absorbed by the soil in the funnel. This means soil has absorbed about half portion of water added. So, the percentage of water absorbed is 50%.
The rate of percolation of water = amount of water percolated/ time taken = 100ml/20mins = 5ml/min.

Suggest Corrections

Similar questions

Appu’s father collected four different types of soil from different places. He took four different beakers with funnel and filter paper. Then he put 10g of each sample of soil on the filter paper placed on the top of each beaker. Then he poured 70 ml of water in each beaker passing the filter paper with soil. After some time he observed that the amount of water in beaker A is 25 ml, beaker B is 30 ml, beaker C is 65 ml and beaker D is 50 ml. Based on this observation of Appu's father, which soil you think he should pick for his farm?

Q. What do you understand by water absorption rate?
Anubhav conducted an experiment in his paddy field to ascertain its water percolation rate. He observed that it took 60 minutes for 36 mililitres of water(mL)to percolate through the soil sample.Find out what were his results about the rate of percolation in his paddy field. [5 MARKS]

Answer the following

1) Manish conducted an experiment in the field related to the rate of percolation. He observed that it took 20 min for 400mL of water to percolate through the soil sample. Calculate the rate of percolation.

2) What is the importance of humus to the soil?

Q. 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.

Q. A boy poured 20 gram of salt into 200 ml of water in a beaker. Then he stirred the water to resolve the salt completely. Then he heated the solution until it was reduced to half. How many grams of salt can be recovered from the remaining solution ?

Join BYJU'S Learning Program