What are the considerations for the construction of tube wells ?
The considerations:
i. Sufficient quantity of ground water must be there where tube well is bored.
ii. There should be fertile land in the neighbourhood of the tube well so that there is demand for irrigation and thus the cost incurred in the constructions and operation could be compensated by increased farm production.
i. Explain any four direct uses of forests.
ii. Where are the important evergreen rain forests found in India ?
iii. Name two trees that are exported from India.
i. What is meant by density of population? What is the average density in India ?
ii. Name the state which has the lowest density and state the factors that have contributed to low density.
What are the different types of rural settlement ? Give an example of an area in India where each type is found.
What are the main purpose of inundation canals ? Why are these canals are not as popular as perennial canals ?
What are the chief benefits of the Kosi project ? Which states/area does the project serve?
i. Name any two drainage basins in the central lowlands of Australia and state which one has internal drainage.
ii. What are the other two relief divisions of Australia ?
