Q1. The Eastern and Western Ghats influence India's topography and rainfall patterns. Which of the following is a key difference between the two ranges?
- (a) Eastern Ghats are continuous, Western Ghats are discontinuous
- (b) Eastern Ghats lie parallel to the Arabian Sea coast
- (c) Western Ghats are higher in elevation and more continuous than Eastern Ghats
- (d) Western Ghats have more mineral wealth
Answer & solution
Answer: (c) Western Ghats are higher in elevation and more continuous than Eastern Ghats
The Western Ghats run as an almost unbroken wall along the Arabian Sea coast with an average height of 900–1,600 m, crossed only through passes.
The Eastern Ghats are low (about 600 m average) and discontinuous, cut into pieces by the Mahanadi, Godavari, Krishna and Kaveri as they flow to the Bay of Bengal.
Revision note — Western Ghats and Eastern Ghats
• Western Ghats (Sahyadri): about 1,600 km from the Tapi valley to Kanyakumari; a block mountain formed by faulting; steep western face, gentle eastern slope.
• Highest peak Anaimudi (2,695 m) in Kerala, the highest in South India; Doddabetta (2,637 m) in the Nilgiris is the second.
• Passes through the Western Ghats: Thal Ghat (Mumbai–Nashik), Bhor Ghat (Mumbai–Pune) and Pal Ghat (Palakkad Gap) between Kerala and Tamil Nadu.
• Eastern Ghats: run from the Mahanadi valley to the Nilgiris; local names Nallamala, Javadi, Palkonda, Shevaroy and Mahendragiri hills.
• Mahendragiri (1,501 m) in Odisha is the best-known Eastern Ghats peak; Arma Konda (Jindhagada, about 1,680 m) in Andhra Pradesh is the highest.
• The two ranges meet at the Nilgiri Hills; the Deccan plateau lies between them and tilts eastward, which is why most peninsular rivers flow into the Bay of Bengal.
• The Western Ghats force the Arabian Sea branch of the monsoon to rise, giving the west coast heavy orographic rain and leaving a rain-shadow over the interior Deccan.
• Local names of the Western Ghats: Sahyadri (Maharashtra), Nilgiri (Karnataka–Tamil Nadu), Anaimalai and Cardamom Hills (Kerala).
• The Western Ghats are a UNESCO World Heritage Site (2012) and one of the world's biodiversity hotspots.
Do not mix these up
• Mineral wealth — the option is the reverse of the fact: the Eastern Ghats and the Chotanagpur belt hold most of India's iron, manganese and bauxite; the Western Ghats are known for biodiversity and rainfall, not minerals.
Also asked from this topic: the other name of the Western Ghats (Sahyadri); a local name of the Eastern Ghats (Nallamala Hills); the state where the Western Ghats are highest (Kerala — Anaimudi).