Lakhmir Singh and Manjit Kaur Solutions for Chapter: Soil, Exercise 5: Questions Based on High Order Thinking Skills (HOTS)

It has been observed that 8 to 10 days after the rains, the level of water in a well rises. Which type of soil would allow rainwater to reach the well faster and in a greater amount? Give reason for your choice.

Soil A has a high percolation rate of water whereas soil B has a low percolation rate of water. Which of the two soils, A or B, is most suitable for growing paddy (rice crop)? Why?

Explain why, if we pass through farmland during a hot summer day, the air above the land appears to be shimmering.

A soil sample weighing $150 \mathrm{g}$ is dried completely by keeping in the sunshine. The mass of dried soil is $135 \mathrm{g}$. Calculate the percentage of water (or moisture) in the given sample of soil.

$200 \mathrm{mL}$ of water was taken in a measuring cylinder. This water was added dropwise to $120 \mathrm{g}$ of dry soil kept on filter paper in a funnel. When the water just started dripping from the funnel, the amount of water left in the measuring cylinder was found to be $140 \mathrm{mL}$. Calculate the percentage of water absorbed by this soil.