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Q70 (IAS/2004) Geography › Indian Physical Geography › Peninsular river systems Answer Verified

Assertion (A) : West-flowing rivers of Peninsular India have no deltas. Reason (R) : These rivers do not carry any alluvial sediments.

Result
Your answer: —  Â·  Correct: A

Explanation

Assertion (A) is true: West-flowing peninsular rivers like the Narmada and Tapi do not form deltas. They typically form estuaries.

Reason (R) is true: These rivers flow through hard rock terrain (rift valleys) and have a short, steep course. Because they do not pass through broad alluvial plains, they lack the alluvial sediment load required to build a delta. Their high velocity and the Arabian Sea's strong tidal action further prevent sediment deposition at the mouth.

Therefore, both statements are individually true, and the lack of sediment supply (R) correctly explains why these rivers cannot form deltas (A).

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SIMILAR QUESTIONS

NDA-II · 2008 · Q42 Relevance score: 5.50

Assertion (A) : Narmada and Tapti rivers do not form deltas. Reason (R) : These rivers form estuaries.

IAS · 2007 · Q85 Relevance score: 3.38

Assertion (A) : River Kalinadi is an east-flowing river in the southern part of India. Reason (R) : The Deccan Plateau is higher along its western edge and gently slopes towards the Bay of Bengal in the east.

CDS-I · 2010 · Q34 Relevance score: 3.21

Deltas are common in India for the east- flowing river systems, whereas they are nearly absent on the west coast, because west-flowing rivers

CDS-II · 2010 · Q6 Relevance score: 2.15

Statement I : Most of the east flowing rivers over the Deccan plateau have deltas at their mouth. Statement II : These rivers have courses through soft rocks of the Deccan . plateau.

CDS-I · 2002 · Q34 Relevance score: 1.35

Assertion(A): In the process of river capture, the head streams of the weaker river are diverted into the powerful river. Reason (R): The powerful river erodes its valley steadily.