Absorption of Water by Soil

Q.

What makes the soil smell so good after the rain?

Q.

Which soil has the highest rate of percolation?

1. Clayey soil

2. Sandy soil

3. Loamy soil

4. Percolation rate is same for all

Q. If a 100g sample of soil absorbs 20mL of water, the percentage of moisture absorption is ___%.

1. 15
2. 30
3. 20
4. 40

Q.

Which of the following do plants obtain from the soil?

1. Water

2. Nutrients

3. Support

4. All of the above

Q. Give one experiment to show that soil contains moisture .

Q.

When a sample of soil is mixed in beaker with some water, a layer of the soil always floats on top. This layer is called humus. What is it composed of ?

1. Bigger but lighter clay particles

2. waste products

3. dust

4. dead remains of plants and animals

Q.

Which type of soil has the highest water holding capacity?

1. Clayey Soil

2. Loamy Soil

3. Sandy Soil

4. Gravel

Q.

What type of soil is used by idol makers and why? [2 MARKS]

Q. Shivam is measuring percolation rate of water through three different soils. He cuts off the top and bottom of a mineral water bottle to get a hollow plastic pipe and places the pipe in each soil sample so that it is 2-3 cm deep in the soil. He then pours 250 mL of water into the pipe and measures the time taken for the water to percolate completely into the soil. He calculated the percolation rates of soil samples as given below:
​ Soil samples Percolation rate​
S1 15.5 mL /min​
S2 7.3 mL/ min
​ S3 1.4 mL/min
​ Which among the following soil samples is most suitable for growing paddy crop and lentils, respectively?

1. S2 and S3​ ​
2. S1 and S2​ ​
3. S3 and S1 ​
4. S3 and S2​

Q. a) What do you mean by the water absorption capacity of soil? [1 mark]
(b) A dry soil sample weighing 100 g is taken. A small quantity of water is added to this soil sample. The water got completely absorbed by the soil sample. After adding water, the soil sample weighs 125 g. Calculate the percentage of water absorbed by the soil sample. [2 marks]

Q.

River water contains _____ and fine particles of sand.

Q.

Appu’s father plans on opening an Anthurium flower farm. He read that Anthurium plants require soils with good water absorption capacity along with good aeration. He has three choices: Clayey soil, Sandy Loam soil and coco peat (an artificial soil made from coconut husks). He took 50 g of each soil and determined the volume of water it absorbed. He also determined the soil particle size using a microscope and tabulated the results.

$\begin{array}{ccc}\text{Soil Type}& \text{Volume of water absorbed by 50g of soil}& \text{Particle size}\\ \text{Clayey}& \text{35 ml}& \text{0.002 mm}\\ \text{Sandy Loam}& \text{15 ml}& \text{1 mm}\\ \text{Coco Peat}& \text{350 ml}& \text{1 mm}\end{array}$

Which soil should Appu’s father choose?

1. Clay soil

2. Sandy soil

3. Coco Peat

4. Can’t say

Q.

Question 16

Continuously water-logged soils are disadvantageous for plant growth. Why?

Q. Which of these soils absorbs and retains the maximum water?

(a) sandy soil
(b) clayey soil
(c) loam soil
(d) sandy-loam soil

Q.

Appu’s father plans on opening an Anthurium flower farm. He read that Anthurium plants require soils with good water absorption capacity along with good aeration. He has three choices: Clayey soil, Sandy loam soil and coco peat (an artificial soil made from coconut husks). He took 50g of each soil and determined the volume of water it absorbed. He also determined the soil particle size using a microscope and tabulated the results.

$\begin{array}{ccc}\text{Soil Type}& \text{Volume of water absorbed by 50g of soil}& \text{Particle size}\\ \text{Clayey}& \text{35 mL}& \text{0.002 mm}\\ \text{Sandy Loam}& \text{15 mL}& \text{1 mm}\\ \text{Coco Peat}& \text{350 mL}& \text{1 mm}\end{array}$

Which soil should Appu’s father choose?

1. Clayey

2. Sandy

3. Coco Peat

4. Can’t say with the given information

Q. Neon lamps are used in botanical gardens and in green houses as they:

1. provides oxygen
2. provide better light
3. None of the above
4. stimulate growth of plants

Q. is the name of the scent produced when rain falls on dry earth.

1. Latex
2. Petrichor
3. Chlorophyll

Q. Percolation rate is highest in which of the following soil?

1. Clay soil
2. Sandy soil
3. Loamy Soil
4. None of these

Q. The lower percolation rate refers that the soil

1. Can hold water for more time
2. None of the above
3. Cannot hold water
4. Can hold water for less time

Q.

Sand has more water absorption capacity than gravel.

1. True

2. False

Q. Which of the following are smallest particles of the soil texture?

1. Sand
2. Silt
3. Clay
4. None of the above

Q.

Clayey soil holds little air and is heavy.

1. Only statement 1 is correct.

2. Only statement 3 is wrong.

Q.

What is the watering of land by artificial means called?

1. Irrigation

2. Percolation

3. Erosion

4. Aeration

Q.

The smell of fresh rain (petrichor) comes from

1. The chemicals released by bacteria

2. The chemicals present in soil

3. The chemicals released by plants

4. All of the above

Q.

Appu’s father plans on opening an Anthurium flower farm. He read that Anthurium plants require soils with good water absorption capacity along with good aeration. He has three choices: Clayey soil, Sandy Loam soil and coco peat (an artificial soil made from coconut husks). He took 50 g of each soil and determined the volume of water it absorbed. He also determined the soil particle size using a microscope and tabulated the results.

$\begin{array}{ccc}\text{Soil Type}& \text{Volume of water absorbed by 50g of soil}& \text{Particle size}\\ \text{Clayey}& \text{35 ml}& \text{0.002 mm}\\ \text{Sandy Loam}& \text{15 ml}& \text{1 mm}\\ \text{Coco Peat}& \text{350 ml}& \text{1 mm}\end{array}$

Which soil should Appu’s father choose?

1. Clay soil

2. Sandy soil

3. Can’t say

4. Coco Peat