Question

The region famous for the burches or crescent shaped dunes in india is _______.
A. Western ghats.
B. Rajasthan desert.
C. Northern plains.
D. Southern plains.

Answer 1

Hint:A dune is a landform, and a mass of wind-blown sand is a great mass. In deserted areas, dunes are most commonly found.
In sandy deserts all over the globe, burches are a very typical landform and are arc-shaped, distinctly asymmetrical in cross section, with a gentle slope facing the wind sand ridge, comprising well-sorted sand.

Complete answer:
The region famous for the burches or crescent shaped dunes in India is Rajasthan desert. The vast shifting sand dunes which receive sediments from the alluvial plains and the coast cover most of the desert region. Due to powerful winds occurring before the start of the monsoon, the sand is highly mobile.
For most of the year, the soil of the Thar Desert remains dry and vulnerable to wind erosion. High-speed winds blow soil from the desert, depositing some on fertile neighbouring lands, and causing sand dunes within the desert to move. Sand dunes are stabilised by the erection of micro-windbreak barriers with scrub material and subsequent forestation of treated dunes with shrub seedlings.

Hence the correct answer is option B.

Note: In the northwestern part of the Indian subcontinent, the Thar Desert, also known as the Great Indian Desert, is a broad arid region that covers an area of 200,000 km2 (77,000 sq mi) and forms a natural border between India and Pakistan. It is the 17th-largest desert in the world and the 9th-largest hot subtropical desert in the world.
In 1881, in reference to the crescent-shaped sand dunes found in Turkestan, the word Barchan was introduced by a Russian naturalist, Alexander von Middendorf.