Geography-1999-Set I

Q1) Give three points of distinction between a Gorge and a Rift valley by giving suitable examples from India. (Marks 3)
Ans1) A Gorge is a deep, narrow valley with almost vertical steep walls. It is formed due to down cutting or rising of river banks and lowering of river bed. It is linked with compressional forces. In India an example of Gorge could be Indus Gorge.
Rift Valley are formed by sinking of land between two roughly parallel faults. These valley are elongated and narrow. They are linked with tensional forces. Narmada, Damodar and Tapi rift valleys could be the Indian examples.

Q2) ‘ The western part of Rajasthan remains almost dry during the South-West Monsoon Season’. Give three important reasons in support of this statement. (Marks 3)
Ans2) The Western part of Rajasthan remains almost dry during South West Monsoon Season because of the following reasons:
a) Arabian Sea Branch goes parallel to the Aravallis.
b) This region is affected by Temperature inversion.
c) Bay of Bengal branch has shed most of its moisture by the time it reaches this region.

Q3) Which state is the leading producer of cotton in India? Mention four geographical conditions necessary for the production of cotton. (Marks 1+2=3)
Ans3) Maharashtra is the leading producer of cotton in India
The four geographical conditions necessary for the production of cotton are:-
a) Temperature ranging from 20o to 30o C.
b) Rainfall varying from 50 to 100 cm.
c) At least 200 frost free days in a year are required for its successful cultivation (Frost is detrimental to this plant).
d) It requires well drained deep soils. Black soil is most suitable for its growth.

Q4) What is meant by an economic region? Why is the formation of economic regions called a dynamic process? Give two important reasons. (Marks 1+2=3)
Ans4) Economic region is a segment of the territory representing the national economy.
Formation of economic region is a dynamic process because economic activities are dynamic in nature. They do not remain same for a long period of time. These change with development of resources, change in demand of the products and improvement in the skills.

Q5) Explain three differences between main worker and marginal worker. (Marks 3×1=3)
Ans5) If an individual is engaged in any economically gainful activity for a period of 183 days in a year, he is called a Main Worker. Those who put in lesser number of days than 183 in a year are called Marginal Workers. Main workers are generally involved in secondary and tertiary occupation whereas Marginal workers are generally engaged in agriculture related activities specially agriculture labourers. Higher proportion of main workers indicated a developed economy whereas Higher proportion of marginal workers indicates the presence of a backward economy.

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