Geography Previous Year Questions (PYQ) with Answers – Page 30

The Ten Degree Channel, which runs along roughly the 10° North parallel, separates the Andaman group from the Nicobar group.

Rajasthan is divided into ten agro-climatic zones, and zone three B is the flood prone eastern plain, which covers Alwar, Bharatpur, Dholpur, Karauli and Sawai Madhopur, the districts drained by the Banganga, Gambhir and Chambal where heavy monsoon flows cause waterlogging.

These are four of the twelve soil orders in the USDA Soil Taxonomy, the classification also used by Indian soil scientists.

Khardung La, the Nubra Valley and monasteries such as Hemis, Thiksey and Diskit all lie in Ladakh, which became a separate Union Territory in 2019.

India follows a single standard time, Indian Standard Time, for the whole country, and it is ahead of GMT, not behind it.

On these two dates the noon sun is vertically overhead at the Equator, the circle of illumination passes through both poles, and day and night are of nearly equal length everywhere on the earth; 21 March is the spring or vernal equinox and 23 September the autumnal equinox.

Alluvial soils, laid down by rivers, generally contain plenty of potash but lack phosphorus, and they are also often short of nitrogen and humus.

This statement is false because primary waves pass through solids, liquids and gases alike. Primary or P-waves are longitudinal waves: they push and pull the rock in the same direction in which the wave travels, compressing and stretching the material just as sound waves compress air.

The ozone layer lies in the stratosphere, mostly between about 15 and 35 km above the earth, and it absorbs most of the sun's harmful ultraviolet radiation.

Granite is an igneous rock, formed when molten magma cools and hardens. Because it cools slowly deep inside the earth's crust, its crystals grow large enough to be seen by the naked eye, so it is called an intrusive or plutonic igneous rock.

Rice is mainly a kharif crop, and in West Bengal and the neighbouring states farmers grow three rice crops in a year: aus in the pre-monsoon and early monsoon season, aman in the main monsoon season with a winter harvest, and boro in winter and spring.

In the southern hemisphere the Coriolis force turns winds to the left, not the right. The Coriolis force is an apparent force caused by the Earth's rotation.

In a centripetal pattern streams flow inward from all sides into a central lake or basin, like spokes pointing to a hub.

In convection the heated matter itself moves and carries its energy with it: air near a warm surface expands, becomes lighter, rises as a current and is replaced by cooler air sinking in its place, and the same happens in a pan of boiling water.

Ice caps and glaciers hold more water than groundwater, while rivers and lakes hold far less than groundwater. About 97 per cent of the Earth's water is salty ocean water, and only about 2.5 to 3 per cent is fresh.

Heat from the Earth's interior sets up slow convection currents in the mantle, and these drag the rigid plates resting on it.

Indian farming is dominated by food crops, not cash crops. Most of India’s cropped area is under food grains such as rice, wheat, millets and pulses, grown largely to feed the farm family and the country.

The Bhakra Nangal Project is built on the Satluj, and its canals carry Satluj water to Punjab, Haryana and Rajasthan.

Constant heat and heavy rain make decomposition fastest there, and climbers and epiphytes are its typical plant forms. Tropical rain forests lie near the equator, in the Amazon, the Congo basin and South-East Asia, with temperatures around 27°C and rain in every month.

Boulders and large pebbles are too heavy to be lifted by the water, so the river rolls, slides and drags them along its bed; this is traction.