Geography - Climate In India Topics
Geography - Climate In India
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quiz Questions
Q91
Under the Trewartha climate classification system, which macro-climatic letter code corresponds to the tropical semi-arid steppe zone running through the rain-shadow region of the Western Ghats?
Aw
BS
Am
Cf
Explanation
In Trewartha's modified classification, 'BS' represents the tropical semi-arid steppe climate, which describes the long interior dry belt of the Indian Peninsula shielded by the Western Ghats.
Q92
The dynamic 'Mascarene High', an intense subtropical high-pressure cell located near Madagascar, positively influences the Indian southwest monsoon under which operational condition?
When it undergoes absolute thermal dissipation
When it becomes structurally stronger and highly intensified
When it migrates northward into the Arabian Sea basin
When it creates a localized deep atmospheric low-pressure core
Explanation
A structurally stronger and well-defined Mascarene High intensifies the pressure gradient across the equator, driving high-velocity cross-equatorial surge winds that strengthen the monsoon over India.
Q93
Which thermodynamic process explains why the descending air mass on the eastern side of the Western Ghats experiences a sharp drop in relative humidity, creating a rain-shadow zone?
Adiabatic Expansion Cooling
Adiabatic Compression Heating
Latent Heat Dissipation via Sublimation
Radiative Boundary Layer Inversion
Explanation
As the air mass descends the leeward side of the mountains, it undergoes adiabatic compression heating. This raises its temperature and expands its moisture capacity, rapidly lowering its relative humidity and stopping rainfall.
Q94
The tracking variation index called the 'Equatorial Indian Ocean Oscillator' (EQUINOO) involves a structural dipole pattern measured between which two coordinates?
The Western Equatorial Indian Ocean and the Eastern Equatorial Indian Ocean
The Persian Gulf Core and the South China Sea Margin
The Gulf of Kutch Plain and the Chilika Lake Lagoon
The Southern Antarctic Shelf and the Madagascar Trench Zone
Explanation
EQUINOO represents an atmospheric sea-saw fluctuation pattern measured between the western equatorial Indian Ocean and the eastern equatorial Indian Ocean (specifically near Indonesia), influencing Indian monsoon precipitation cycles.
Q95
During the post-monsoon retreating cycle in October, why do severe convective tropical depressions frequently track into the coastal deltas of Andhra Pradesh and Odisha rather than Gujarat?
The Arabian Sea maintains a permanent freezing surface current
The high thermal energy and upper-level steering in the Bay of Bengal direct cyclones westward
The Aravalli Range acts as a thermal magnet to repel cyclones completely
The Coriolis Force drops to zero over the western shoreline of India
Explanation
The high surface water temperature and low-pressure cell layout in the Bay of Bengal during autumn trigger multiple cyclonic systems that are steered westward into the east coast by the easterly upper air currents.
Q96
Which atmospheric factor serves as the immediate precursor for a severe 'Cold Wave' condition to sweep across northwestern plains like Punjab and Rajasthan during late December?
The sudden structural strengthening of the localized thermal low-pressure trough
The passage of a Western Disturbance followed by clear skies and cold northerly winds
The premature arrival of the warm Somali cross-equatorial air surge
The absolute stagnation of the subtropical easterly jet stream over Delhi
Explanation
The clearing of the sky following the passage of a Western Disturbance allows intense terrestrial radiation loss, while cold, dry continental winds originating from snow-clad Himalayan slopes plunge southwards.
Q97
The core axis of the Monsoon Trough over Northern India typically displays a diurnal structural oscillation toward which geographical barrier?
The Vindhyan Range foothills
The Himalayan foothills
The Chota Nagpur boundary slopes
The Thar Desert eastern margin
Explanation
The Monsoon Trough displays periodic spatial oscillations; its migration northward toward the foothills of the Himalayas leads to a suppression of rainfall over the plains, creating a monsoon break.
Q98
Which of the following spatial zones in India records the highest relative variability of annual rainfall, making its agriculture highly vulnerable to frequent droughts?
The Brahmaputra Valley Plain
Western Rajasthan and Kachchh
The Malabar Coastal Strip
The Northeast Frontier Hills
Explanation
Areas with low annual rainfall, such as Western Rajasthan, Kachchh, and the rain-shadow regions of the Western Ghats, experience the highest relative rainfall variability (often exceeding 50%).
Q99
The upper atmospheric wind system known as the Tropical Easterly Jet Stream (TEJ) reaches its peak intensity and velocity at approximately which pressure level in the troposphere over India?
850 hPa level
500 hPa level
150 hPa level
1000 hPa level
Explanation
The Tropical Easterly Jet Stream develops in the upper troposphere during summer and peaks near the 150 hPa to 100 hPa pressure levels (around 13 to 15 km altitude) over southern India.
Q100
Which structural geographic feature acts as the primary barrier preventing the warm and humid summer monsoon air masses from traveling directly north into Tibet and Central Asia?
The Karakoram Highway Ridge
The Himalayan Mountain Wall
The Kunlun Shan Margin
The Hindu Kush block
Explanation
The high altitudinal physical mass of the Himalayas prevents the northward penetration of the southwest monsoon winds, ensuring that their moisture contents are released entirely over the Indian subcontinent.