Geography GK Questions with Answers – Page 75

Nathu La lies in eastern Sikkim on the old trade route from Gangtok to Lhasa and is one of the passes on India's border with the Tibet region of China; Jelep La, also in Sikkim, is the other.

Bhangar is the older alluvial deposit of the Northern Plains. It forms terraces that stand above the present flood level, so fresh silt no longer reaches it, and long leaching has left calcareous concretions called kankar in its profile.

The Bhabar is a narrow belt about 8 to 16 kilometres wide, laid along the foot of the Shiwalik range, where the rivers leaving the hills drop their coarsest load.

Karewas are thick beds of glacial clay, silt and other lake sediments laid down in the Kashmir valley, which lies between the Pir Panjal and the Greater Himalaya.

Duns are flat-floored longitudinal valleys formed where rivers coming out of the Lesser Himalaya were held up behind the rising Shiwalik and filled the depression with gravel and silt.

The Himadri is the innermost and northernmost of the three parallel Himalayan ranges, with an average height of about 6,000 metres.

Chilika lies on the eastern coastal plain south of the Mahanadi delta, separated from the Bay of Bengal by a long sandbar, and it is the largest brackish water lagoon in the country and a Ramsar wetland famous for migratory birds and the Irrawaddy dolphin.

The Trans-Himalayan ranges, the Karakoram, the Ladakh and the Zaskar, lie north of the Greater Himalaya and belong structurally to the Tibetan block rather than to the Himalayan fold belt.

Majuli lies in the braided channel of the Brahmaputra in Assam, where the river splits into many arms and deposits enormous quantities of silt.

Indira Point stands at the southern tip of Great Nicobar Island, the largest of the Nicobars, and it is the southernmost point of the territory of India.

It runs roughly along the ten degree north parallel, which is where it gets its name, and it divides Little Andaman in the north from Car Nicobar in the south, separating the two halves of the union territory.

The Deccan Trap was formed by vast fissure eruptions that spread sheet after sheet of lava over the north-western peninsula.

The Aravalli was folded in the Precambrian era, hundreds of millions of years before the Himalaya rose, and long erosion has reduced it to a chain of low residual ridges running north-east from Gujarat through Rajasthan towards Delhi.

The Palghat Gap is a wide trough about thirty kilometres across, and it is the principal natural break in the otherwise continuous wall of the Western Ghats.

Both rivers flow westward along faulted troughs, or rift valleys, that lie between the Vindhya and the Satpura ranges, and both empty into the Arabian Sea through estuaries instead of deltas.

Anaimudi stands in the Anaimalai hills of Kerala, where the Anaimalai, Palani and Cardamom hills meet, and rises to about 2,695 metres.

Where the rivers leave the hills they drop their coarsest load, and the resulting belt of gravel and pebbles is so porous that the smaller streams sink into it and vanish.

Lakshadweep is a group of small coral islands, atolls and reefs lying off the Malabar coast of Kerala in the Arabian Sea, built on a submarine ridge.

Nuclear power is produced by the fission of uranium and thorium, which are mined ores present in fixed quantities in the Earth's crust, so once used they cannot be replaced within human time.

Bamboo drip irrigation is a two-hundred-year-old practice of the Khasi and Jaintia hills of Meghalaya.