Drainage Systems in India

Correct answer: A. River system of an area

Drainage means the arrangement of rivers and streams of an area. Exam tip: connect drainage with river system.

Correct answer: B. Area drained by one river system

The area drained by a river and its tributaries is a drainage basin. Exam tip: understand basin as a water collection area.

Correct answer: C. High land separating two drainage basins

Correct answer: C, high land separating two drainage basins. A water divide is a ridge, upland or other elevated surface that separates the areas from which water flows into two different river systems. Rain falling on one side of the divide flows toward one drainage basin, while rain falling on the other side flows toward another basin. A is incorrect because the mouth is the place where a river ends in a sea, lake or another river. B is incorrect because the deep part of a lake has no meaning related to separating drainage basins. D is incorrect because a sea wave is a movement of seawater and is not a landform separating river systems. A divide need not always be a very high mountain; even a raised ridge or upland can direct water in different directions. Memory cue: “Divide divides drainage.” Do not confuse a water divide with a watershed in every usage, although both terms are closely related in school geography.

Correct answer: D. Two

Indian rivers are divided into Himalayan and Peninsular river systems. Exam tip: remember this basic classification.

Correct answer: A. They are perennial

Himalayan rivers get water from glaciers and rainfall. Exam tip: connect the word perennial with Himalayan rivers.

Correct answer: B. They are mostly seasonal

Peninsular rivers depend more on rainfall so their flow may be seasonal. Exam tip: treat them as rainfall based rivers.

Correct answer: C. Ganga

The Ganga is a major river of the Himalayan river system. Exam tip: remember Ganga as a Himalayan river.

Correct answer: D. Godavari

Godavari is a major river of Peninsular India. Exam tip: remember Godavari as a large river of southern India.

Correct answer: A. North western part

The Indus river system is associated with north western India. Exam tip: connect Indus with Punjab and the north west.

Correct answer: B. It supports a vast plain and large population

The Ganga river system gives water and fertile soil to the vast northern plain. Exam tip: remember the importance of the Ganga plain.

Correct answer: C. Assam and north eastern India

The Brahmaputra is linked with Arunachal Pradesh and Assam in India. Exam tip: connect Brahmaputra with the north east.

Correct answer: D. Narmada

The Narmada flows westward into the Arabian Sea. Exam tip: remember Narmada and Tapi as west flowing rivers.

Correct answer: A. Godavari

Godavari is called the longest river of Peninsular India. Exam tip: it is also called Dakshin Ganga.

Correct answer: C. Smaller river joining a main river

A tributary joins a main river. Exam tip: understand the relation between main river and tributary in a river system.

Correct answer: D. Where a river joins a sea or lake

A river mouth is the place where a river joins a larger water body. Exam tip: keep source and mouth separate.

Correct answer: A. Deposition of sediment by a river

The direct answer is A, deposition of sediment by a river. A river carries sand, silt, clay and small stones from higher land. Near its mouth, where the river enters a sea or lake, the river usually slows down. A slower current cannot carry as much material, so the sediment settles and accumulates. Over time, this deposited material may build a delta, often with distributary channels. Option B describes glacier formation in mountains, not delta formation. Option C is unnecessary and incorrect because a sea does not have to dry up for a delta to form. Option D describes a desert landform made mainly by wind, not a river delta. Thus deposition at the river mouth makes A correct. The exact shape and size of a delta also depend on waves, tides and currents, but deposition is the key process in this school-level question. Memory cue: river slows, load settles, delta develops.

Correct answer: B. Brahmaputra system

The Brahmaputra is a major part of the Himalayan river system. Exam tip: connect Indus Ganga and Brahmaputra with the Himalayan system.

Correct answer: C. River system

A main river and its tributaries form a river system. Exam tip: understand river system like a network.

Correct answer: A. They flow westward

Narmada and Tapi are west flowing rivers of Peninsular India. Exam tip: remember them as exceptions to the general eastward flow.

Correct answer: B. Godavari

The Godavari is called ‘Dakshin Ganga’ because it is one of the largest river systems of Peninsular India and has an extensive drainage basin. The Kaveri is also an important South Indian river, but it is not commonly known by this nickname. Exam tip: associate the title ‘Dakshin Ganga’ with the Godavari.

Correct answer: C. Peninsular river system

The Krishna is a Peninsular river of southern India. Exam tip: treat Krishna as an east flowing Peninsular river.

Correct answer: D. Bay of Bengal

The Kaveri flows eastward into the Bay of Bengal. Exam tip: also connect Kaveri with the eastern coast delta.

Correct answer: A. A river that has water flow throughout the year

A perennial river has water throughout the year. Exam tip: remember Himalayan rivers as examples of perennial rivers.

Correct answer: B. Rainfall

Seasonal rivers depend more on rainfall. Exam tip: connect the flow of Peninsular rivers with rainfall.

Correct answer: C. Meanders and flood plains

In plains slow flow can form meanders and flood plains. Exam tip: remember river features of plains.