Geography - Climate In India Topics
Geography - Climate In India
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quiz Questions
Q131
The dynamic retreat of the Southwest Monsoon from Northern India during October is characterized by the rapid replacement of the monsoon trough with which atmospheric feature?
An intense tropical low-pressure cell
A continental high-pressure system
An active westerly jet convergence corridor
A warm maritime cyclonic vortex
Explanation
As temperatures drop in autumn, the low-pressure monsoon trough weakens and retreats southward, replaced by a dry continental high-pressure system over North India.
Q132
According to the Koeppen climate classification, the abbreviation 'Amw' signifies a climate type found along the Malabar Coast. What does the letter 'm' structurally represent?
Maritime dominant tracking
Monsoon climate with a short dry season
Mountain shadow zone dynamic
Moderate moisture index thermal setup
Explanation
In Koeppen's system, 'A' stands for tropical, 'w' for dry winter, and 'm' specifically signifies a monsoon type with a short dry season despite heavy seasonal rainfall.
Q133
The pre-monsoon convective thunderstorms in East India, called Nor'westers, derive their high velocity and destructive nature from the convergence of warm moist air with cold dry air masses descending from where?
The Arabian Sea surface layer
The Chota Nagpur Plateau or mountain gaps
The Maldives Equatorial current core
The Thar Desert thermal plume
Explanation
Nor'westers develop when hot, humid air from the Bay of Bengal collides with cold, dry air masses originating over the Chota Nagpur Plateau or the Himalayas.
Q134
Which tracking metric tracks the pressure difference between the western Indian Ocean and the southeastern Pacific Ocean to establish long-range forecasting models for Indian rain?
The Findlater Wind Velocity Index
The Southern Oscillation Index (SOI)
The Somali Low Jet Depth score
The Mascarene Core Pressure Gradient
Explanation
The Southern Oscillation Index (SOI) measures the normalized pressure difference between Tahiti (Pacific) and Darwin (Australia/Indian Ocean margins) to assess global ENSO conditions.
Q135
During El Niño conditions, why does the moisture-laden southwest monsoon wind flow across the Arabian Sea display a typical decrease in strength?
The Coriolis effect drops to absolute zero over India
The Walker Circulation shifts, causing atmospheric subsidence over India
The Himalayan heights decrease thermally in summer months
The Palk Strait experiences an immediate freeze
Explanation
El Niño disrupts the global Walker Circulation, inducing an abnormal sinking air pattern (subsidence) over the Indian Ocean that weakens the land-sea pressure gradient.
Q136
The winter rain brought to northwestern plains by Western Disturbances originates over which distant maritime basin?
The South China Sea
The Mediterranean Sea
The Sea of Japan
The Tasman Sea Core
Explanation
Western Disturbances are extra-tropical storms that originate over the Mediterranean Sea and travel eastward across West Asia to enter northwest India.
Q137
The multi-week dry spell observed within the active phase of the southwest monsoon is structurally linked to which atmospheric event?
The strengthening of the Tropical Easterly Jet
The northward shift of the monsoon trough axis
The lowering of sea surface temperatures in the Arabian Sea
The formation of a deep low-pressure center over Mumbai
Explanation
A monsoon break occurs over the plains when the low-pressure monsoon trough shifts northwards toward the foothills of the Himalayas, leaving Central India dry.
Q138
Which mountain system acts as an effective geographical guide to channel the Bay of Bengal branch of the southwest monsoon deep into the Indo-Gangetic Plains?
The Aravalli Range
The Himalayas
The Satpura Range
The Western Ghats
Explanation
The Himalayan range blocks the northward movement of the Bay of Bengal monsoon branch, deflecting these moisture-laden winds westwards along the Indo-Gangetic Plains.
Q139
Why does Western Rajasthan receive very low rainfall from the Arabian Sea branch of the southwest monsoon?
The Aravalli Range lies parallel to the monsoon wind direction
The area is dominated by intense sub-surface geothermal activity
The moisture freezes instantly over the Sambhar Lake
Cold maritime air masses create a permanent inversion layer
Explanation
The Aravalli Range lies parallel to the direction of the Arabian Sea monsoon winds, failing to provide an effective orographic barrier to force the winds to rise.
Q140
Under Koeppen's climatic classification of India, which letter code designates the Coromandel coast featuring a distinct summer dry season?
Aw
As
Cwg
Amw
Explanation
The 'As' letter code denotes a tropical climate with a dry summer season, uniquely applicable to the Coromandel coast of Tamil Nadu which receives winter rainfall.