What is the most important geographical clue while understanding the Luni River?
Luni is an inland drainage river of Rajasthan. Exam tip: remember it as a river that does not reach the sea.
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SubjectsGeography
भारत की अपवाह प्रणालियाँ
In this Class 9 Geography topic from the chapter Drainage, students learn how water flows across India through river systems, drainage basins, and networks. They explore the Himalayan and Peninsular river systems, compare their origins, courses, seasonal flow, and landforms, and understand patterns such as dendritic, trellis, and radial drainage. The topic also introduces the importance of rivers and lakes, along with concerns related to floods, pollution, and water management.
TOPIC PRACTICE
Up to 20 questions from this page. Select your focus, then start.
Luni is an inland drainage river of Rajasthan. Exam tip: remember it as a river that does not reach the sea.
View question detailsDendritic pattern looks like branches of a tree. Exam tip: connect it with areas of general slope.
View question detailsIn radial pattern, streams flow outward from a high centre. Exam tip: link it with highland.
View question detailsIn trellis pattern, the angle between main stream and tributaries is clear. Exam tip: link it with structural control.
View question detailsRectangular pattern can develop along joints and faults in rocks. Exam tip: connect it with rock structure.
View question detailsDeposition dominates in delta and tidal influence is stronger in estuary. Exam tip: identify the process at the mouth.
View question detailsA tributary adds water while a distributary flows away in delta region. Exam tip: identify by flow direction.
View question detailsDuring floods, a river deposits fertile alluvium along its banks. Exam tip: connect flood plain with deposition.
View question detailsIn lower course, river energy decreases and deposition increases. Exam tip: link delta with lower course.
View question detailsSteep slope in upper course increases erosion. Exam tip: connect upper river course with valley formation.
View question detailsRivers like Godavari, Krishna and Cauvery form deltas. Exam tip: connect eastward flow with deltas.
View question detailsNarmada is west-flowing and forms an estuary in Arabian Sea. Exam tip: observe both direction and mouth.
View question detailsCauvery is a Peninsular river, not part of the Indus system. Exam tip: keep river classification clear.
View question detailsForests reduce and slow surface runoff. Leaves and branches intercept some rainfall, while roots bind soil and the forest floor absorbs and stores water. This allows more water to enter the soil and makes the remaining water reach streams gradually. When forests are removed, the ground often absorbs less water, so a larger volume flows quickly over the surface into channels. The river can then rise rapidly, increasing flood risk, especially during intense rain.
Deforestation does not stop a river from reaching the sea, turn every tributary into a delta, or always make river water salty. Those statements do not describe the effect of reduced forest cover on runoff. Therefore, option A correctly explains why flood danger can increase when forests decrease in a basin.
Pollution harms river water and ecology. Exam tip: connect river conservation with water quality.
View question detailsDomestic and industrial wastewater may contain pathogens, organic waste, and harmful chemicals. Treatment reduces these pollutants, helping to keep river water safer and protecting aquatic life. Stopping a river’s flow is not a conservation measure; it harms the river system. Exam tip: wastewater treatment means less pollution and better water quality.
View question detailsRiver valleys fulfil many needs of human life. Exam tip: remember the link between rivers and civilisation.
View question detailsFloods can cause damage as well as deposition. Exam tip: analyse flood impacts in a balanced way.
View question detailsChange in river course can affect land use and settlements. Exam tip: treat river as a dynamic system.
View question detailsDirection and mouth help in river classification. Exam tip: strengthen river identification through map practice.
View question detailsQUIZ COMPLETE