Convectional rainfall is common in which part of India during the pre-monsoon period?

Correct option is C

The correct answer is (c) Chhota Nagpur Plateau.

• Convectional rainfall occurs when the ground heats up, causing the air above it to warm, rise, and cool down at higher altitudes, leading to the formation of clouds and rainfall. This type of rainfall is more common during the pre-monsoon period (late spring, just before the arrival of the southwest monsoon).

• The Chhota Nagpur Plateau, which includes parts of Jharkhand, Bihar, and West Bengal, experiences significant convectional rainfall during the pre-monsoon months. The heat from the land surface causes the air to rise, leading to heavy showers, particularly in the afternoon.

• The region's topography and temperature during the pre-monsoon months make it prone to this kind of rainfall.

Information Booster:

• Convectional rainfall is typical in regions where the land heats up quickly, such as plateaus and interior regions, leading to air instability.

• It is most common during the pre-monsoon months (March to June), before the onset of the southwest monsoon, which brings sustained rainfall across much of India.

• Western Ghats, Kerala coast, and Eastern Himalayas are generally influenced by orographic and monsoonal rainfall patterns, rather than convectional rainfall, although convection can occur locally in these regions as well.

Additional Information:

• Option A is incorrect because Western Ghats and its foothills receive rainfall mainly from the southwest monsoon, influenced by orographic rainfall rather than convectional rainfall.

• Option B is incorrect because the Kerala coast receives rainfall mainly from the southwest monsoon, not convectional rainfall.

• Option D is incorrect because Eastern Himalayas are subject to monsoonal rainfall and orographic effects, not predominantly convectional rainfall.