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Multiple Choice Questions

Q.What is the proportion of area of India which receives annual rainfall less than 75 cm?

(a) Half
(b) One-third
(c) Two-third
(d) Three-fourth
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✓ Free question

Roughly two-thirds of India’s land area receives less than 75 cm of rain in a year — the answer is (c) Two-third.

India’s rainfall is not a uniform blanket of monsoon water. The southwest monsoon, which brings most of the country’s rain, hits the western coast and the northeast first, then travels inland, losing moisture as it goes. By the time it reaches the northwest — Rajasthan, parts of Gujarat, and the western plains — the clouds have little left to give. The result is a stark geography of wet and dry: the windward slopes of the Western Ghats and the hills of the northeast drown in rain, while the Deccan plateau’s interior and the northwest stay parched.

When you map annual rainfall across the country, a striking pattern emerges. The areas that receive more than 75 cm are actually the exception, not the rule. They include the western coastal strip, the northeastern states, the Himalayan foothills, and parts of eastern India like West Bengal and Odisha. But these are relatively narrow bands. The vast central and western expanses — much of the Deccan plateau, the semi-arid regions of Maharashtra and Karnataka, and nearly all of Rajasthan — fall well below that mark. Add to this the fact that a large part of the country’s landmass is either arid or semi-arid, and the picture becomes clear.

Note

The 75 cm figure is not an arbitrary line. It is often used as a rough threshold separating “adequately watered” agricultural regions from those that need irrigation or dry-farming techniques. Areas below it face chronic water stress.

So, if you were to take a map of India and colour the regions getting less than 75 cm, you would find yourself shading a surprisingly large portion of the country. This is not a marginal majority — it is a clear, dominant share. The commonly cited figure is that about two-thirds of India’s area receives less than this amount. That means for every three square kilometres of the country, two are on the drier side of the 75 cm line.

Important

This is why Indian agriculture is so heavily dependent on irrigation and why the monsoon’s variability hits so hard. A country where most of the land gets modest rainfall cannot rely on rain-fed farming alone.

The other options — half, one-third, three-fourth — don’t fit the geography. Half would suggest a neat split, which is far from true. One-third would imply the dry areas are a minority, which contradicts the vast arid stretches of the northwest. Three-fourth overshoots, giving the dry regions even more land than they actually occupy. The accurate proportion sits between half and three-fourths, and the standard answer is two-thirds.

✓Final answer

In short, about two-thirds of India’s area receives annual rainfall of less than 75 cm, making option (c) the correct choice.

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