Regarding Indian Monsoon and its branches, which statements are TRUE? a) The Bay of Bengal branch moves westward towards the Gangetic plains. b) The Bay of Bengal branch moves towards Assam, the region with the highest average annual precipitation. c) The winter monsoon brings heavy rainfall mainly to the western coast of India. d) The Arabian Sea branch strikes the Western Ghats causing heavy orographic rains on windward slopes.

The Correct answer is: b and d only Key Points Statement a: The Bay of Bengal branch moves westward towards the Gangetic plains This statement is incorrect . The Bay of Bengal branch actually moves northwestwards from the Bay of Bengal towards the northeastern states of India and then bifurcates to cover the Gangetic plains and eastern India. It does not directly move purely westward; its initial movement is northeast and northward along the foothills of the Himalayas. Statement b: The Bay of Bengal branch moves towards Assam, the region with the highest average annual precipitation This statement is correct . The Bay of Bengal branch of the southwest monsoon strikes the northeastern states, especially Assam, bringing heavy rainfall due to the interaction with the Khasi and Garo hills and the Brahmaputra valley. Assam receives one of the highest average annual rainfalls in India. Statement c: The winter monsoon brings heavy rainfall mainly to the western coast of India This statement is incorrect . The winter monsoon (northeast monsoon) mainly affects the southeastern coast of India, particularly Tamil Nadu and parts of Andhra Pradesh. The western coast receives most of its rainfall from the southwest monsoon, not the winter monsoon. Statement d: The Arabian Sea branch strikes the Western Ghats causing heavy orographic rains on windward slopes This statement is correct . The Arabian Sea branch moves from the Arabian Sea towards the Western Ghats. It causes heavy orographic rainfall on the western slopes of the Ghats due to moist air rising and cooling, which is a classic example of orographic precipitation. Additional Information Indian Monsoon Branches: The Arabian Sea branch strikes the Western Ghats and the west coast, bringing heavy rainfall to Kerala, Karnataka, Goa, and Maharashtra. The Bay of Bengal branch moves northeastwards, bringing heavy rainfall to northeastern states, Bengal, and eventually the Gangetic plains. The convergence of these branches over central India enhances rainfall during the monsoon season. Winter Monsoon: The northeast monsoon (winter monsoon) affects mainly Tamil Nadu, southeast Andhra Pradesh, and parts of Pondicherry and Kerala. It brings moderate rainfall, and some regions like Tamil Nadu rely on this season for significant annual precipitation. Orographic Rainfall: Occurs when moist air is forced to rise over mountains, cooling and condensing to produce rain. Western Ghats and northeastern hills are prime examples of regions receiving orographic rainfall in India.