Soil Resources

Question 1

Residual soil?

Answer 1

Soils formed in their original position by breaking up of their parent material

Question 2

Transported soil?

Answer 2

Soils transported by various agents of erosion

Question 3

Another name for Residual Soil?

Answer 3

in situ soil

Question 4

Another name for Transported soil?

Answer 4

ex situ soil

Question 5

What is alluvial soil?

Answer 5

The soil formed by the sediments transported by rivers

Question 6

The fine particles deposited by rivers?

Answer 6

Alluvium

Question 7

What is alluvial soil also called? Why?

Answer 7

Riverine soil. This is because it is mostly found near the river basins

Question 8

What is the composition of alluvial soil?

Answer 8

Mixture of sand, clay and silt called loam

Question 9

What is the mixture of sand, clay and silt called?

Answer 9

Loam

Question 10

Three Important river systems that deposit alluvial soil

Answer 10

Indus, Ganga and Brahmaputra

Question 11

What percent of the land area does alluvial soil cover?

Answer 11

40%

Question 12

Which area in India is fully made up with alluvial soil?

Answer 12

Northern Plains

Question 13

In deltas of which rivers is alluvial soil predominant?

Answer 13

Mahanadi, Godavari, Krishna and Kaveri

Question 14

What are the two types of alluvial soil on the basis of age?

Answer 14

Khadar and Bhangar

Question 15

Which alluvial soil contains lime nodules or kanker?

Answer 15

Bhangar or older alluvial soil

Question 16

Which soil is more fertile among Khadar and Bhangar

Answer 16

Khadar soil

Question 17

Alluvial Soil forms the largest and most important group as it contributes to the __________ of India

Answer 17

agricultural wealth

Question 18

__________ forms the largest and most important group as it contributes to the agricultural wealth of India

Answer 18

Alluvial Soil

Question 19

Characteristics of Alluvial Soil?

Answer 19

1. It is dry, porous, sandy, and yellow in colour
2. It is rich in lime, iron, magnesia, potassium alumina
3. Deficient in Nitrogen
4. Contains clay

Question 20

In drier areas, alluvial soil is more _______

Answer 20

alkaline

Question 21

Crops associated with alluvial soil

Answer 21

Rice
wheat
sugarcane
cotton
oilseed
gram
tobacco
 RWSCOGT

Question 22

Alluvial soil is good for the growth of ________ and __________ crops

Answer 22

Kharif and Rabi crop

Question 23

In which region is alluvial soil useful for jute cultivation?

Answer 23

Lower Ganga-Brahmaputra valley

Question 24

What is black soil also called?

Answer 24

Black-cotton soil, regur soil or lava soil

Question 25

What type of soil is Black soil?

Answer 25

residual soil

Question 26

Where is black soil found?

Answer 26

Maharashtra, Madhya Pradesh, Gujarat, Andhra Pradesh, Karnataka and some parts of Tamil Nadu

Question 27

What is the percentage of clay content in black soil?

Answer 27

50%

Question 28

What happens to lava soil when wet and dry?

Answer 28

When wet, it expands. When dry, it shrinks and develops big cracks

Question 29

What are the minerals Alluvial soil is rich in?

Answer 29

L- lime
I- iron
M- magnesia
P- potash
A- alumina

Question 30

What are the minerals Black soil is rich in??

Answer 30

L - Lime
I - Iron
M - Magnesium 
P - Potassium
C - Calcium

Question 31

Minerals Black soil is poor in?

Answer 31

Poor in Phosphorous, nitrogen and organic matter

Question 32

Characteristics of Black Soil?

Answer 32

1. Fine textured and clayey in nature
2. Rich in Lime, Iron, Magnesium, Calcium and Potassium
3. Poor in Nitrogen and Phosphorous due to it’s clayey nature
4. It is black in colour as it is a product of lava
5. It develops cracks when dry and gets sticky when wet