Rajasthan Geography

Climate of Rajasthan

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EASY

Consider the following Assertion and Reason regarding the local terminology of monsoon winds:

Assertion (A): The eastern monsoon winds in Rajasthan are locally termed 'Purvai'.
Reason (R): These winds originate from the Arabian Sea and bring moisture to the desert regions.

Select the correct option:

Both (A) and (R) are true, and (R) is the correct explanation of (A).

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(A) is true, but (R) is false.

(A) is false, but (R) is true.

Explanation

🌟 Quick Verification

Direct Answer: (A) is true, but (R) is false.
Core Concept: Correct identification of 'Purvai' winds.

🧠 Concept Blueprint

The 'Purvai' Definition: The term 'Purvai' refers to moisture-laden winds coming from the Bay of Bengal (Eastern direction), not the Arabian Sea.
Origin Correction: The Arabian Sea branch enters from the South/West. Associating 'Purvai' with the Arabian Sea is a common factual error.

💡 Exam Strategy & Trivia

Tip

Memorable Trivia: 'Purvai' is derived from 'Purva' meaning East. Winds from the East in India are almost exclusively associated with the Bay of Bengal branch.

MEDIUM

Regarding the withdrawal dates of the monsoon in India, which of the following is correct?

It withdraws from North India on September 16th.

It withdraws from the entire Indian territory on September 30th.

It starts withdrawing from India on September 16th.

It starts withdrawing from Rajasthan on October 31st.

Explanation

🌟 Quick Verification

Direct Answer: It starts withdrawing from India on September 16th.
Core Concept: The chronological timeline of monsoon retreat from the Indian subcontinent.

🧠 Concept Blueprint

Timeline: The withdrawal process is a gradual retreat southward. It begins on September 16th from India, reaches North India by September 30th (coinciding with Rajasthan's withdrawal), and concludes for the entire country by October 31st.

📊 Fact Spotlight

Event	Date
Start of Withdrawal (India)	16th September
Withdrawal from North India / Rajasthan	30th September
Full Withdrawal (Entire India)	31st October

MEDIUM

Assertion (A): Rajasthan's climate is often termed 'continental' or 'extreme'.
Reason (R): The state is landlocked and lacks the moderating influence of the sea.

Select the correct answer from the codes below:

Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true but (R) is not the correct explanation of (A).

(A) is true but (R) is false.

(A) is false but (R) is true.

Explanation

🌟 Quick Verification

Direct Answer: Both (A) and (R) are true and (R) is the correct explanation of (A).
Core Concept: Continental Climate is defined by extreme temperature ranges due to inland location.

🧠 Concept Blueprint

Continental Nature:
- An extreme (continental) climate refers to the absence of the moderating influence of large water bodies (oceans/seas).
- Because Rajasthan is far from the coast, land heats up and cools down rapidly compared to coastal regions.
Reasoning:
- The landlocked geography is the primary driver of this temperature volatility, causing the 'extreme' label.

💡 Exam Strategy & Trivia

Tip

Trivia: This 'extreme' nature is why Rajasthan experiences scorching heat in summer (often >45°C) and chilly conditions in winter (sometimes near freezing at night in desert zones).

MEDIUM

According to Koeppen's climate classification, what type of climate is found in Dungarpur and Banswara districts?

BWhw

BShw

Cwg

Explanation

Dungarpur and Banswara districts are located in the 'Aw' (Tropical Humid) climate region.

अन्वेषक - 27.12.2020

MEDIUM

Which is the isohyet line that divides Rajasthan into two parts?

25 cm.

50 cm.

100 cm.

150 cm.

Explanation

The 50 cm rainfall line is the rainfall line that divides Rajasthan into two almost equal parts.

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MEDIUM

Identify the climate classification system that incorporates Temperature, Evaporation, and Rainfall as its basis.

Koppen Classification

Trewartha Classification

Thornthwaite Classification

General Climate Classification

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Thornthwaite Classification.

🧠 Concept Blueprint

Thornthwaite's Model: This system is scientifically notable for including Evaporation as a key variable. Evaporation is a measure of the moisture demand in the atmosphere, making it a more complex hydrological classification than systems relying on rainfall alone.
Distinction: Koppen relies on biotic factors (Vegetation), whereas Thornthwaite leans on energy/moisture balance (Evaporation).

💡 Exam Strategy & Trivia

Tip

Common Trap: Students often confuse Thornthwaite with Koppen because both involve multi-factor climate assessments. Remember: Thornthwaite = Evaporation.

MEDIUM

Consider the following statements regarding the concepts of Climate and Weather:

Weather (Mausam) refers to short-term changes in the atmosphere.
Climate (Jalvayu) refers to long-term atmospheric conditions of a region.
Both Climate and Weather are defined by identical time-frames.

Which of the statements given above are correct?

1 and 2 only

2 and 3 only

1 and 3 only

1, 2, and 3

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is 1 and 2 only.
Core Concept: The primary distinction between Climate and Weather is the temporal dimension (duration of events).

🧠 Concept Blueprint

Statement 1 (Correct): Weather describes the current or near-term state of the atmosphere.
Statement 2 (Correct): Climate describes the long-term statistical average of atmospheric conditions.
Statement 3 (Incorrect): They are fundamentally different; Climate is long-term (decades), while Weather is transient (hours/days).

📊 Fact Spotlight

Factor	Weather (Mausam)	Climate (Jalvayu)
Duration	Short-term (minutes/days)	Long-term (30+ years)
Nature	Dynamic / Changeable	Stable / Pattern-based
Focus	Specific point in time	Historical average

💡 Exam Strategy & Trivia

Tip

Common Pitfall: Students often conflate the two; always look for the word 'average' (suggesting climate) vs 'current/state' (suggesting weather).

पशु परिचर-3.12.2024 (S-I)

MEDIUM

Which of the following statements is not correct regarding the climate of Rajasthan?

Western desert receives the least rainfall, whose annual average is 25 cm.

Average rainfall in Rajasthan is not high because it is situated in the interior part.

The extension of the Aravalli range is perpendicular to the monsoon winds.

Some rain is received in winter due to 'Mawat'.

Explanation

The extension of the Aravalli range is 'parallel' to the monsoon winds, not 'perpendicular'. Therefore, statement (3) is incorrect.

MEDIUM

Consider the following statements regarding low-to-medium rainfall isohyets in Rajasthan:

The 10 cm Isohyet includes Jaisalmer, Phalodi, Bikaner, and southern Sri Ganganagar.
The 30 cm Isohyet includes Barmer, Jodhpur, Nagaur, Churu, and Hanumangarh.
The 40 cm Isohyet includes Jalore, Pali, Didwana-Kuchaman, Sikar, and Jhunjhunu.

Which of the statements given above are correct?

1 and 2 only

2 and 3 only

1 and 3 only

1, 2, and 3

Explanation

🌟 Quick Verification

Direct Answer: The correct statements are 1, 2, and 3 (all are correct).
Core Concept: Isohyet district classifications group territories experiencing similar precipitation levels.

🧠 Solution Blueprint

Statement Verification:
- Statement 1 is correct as the 10 cm Isohyet delineates the driest western sectors (Jaisalmer, Phalodi, Bikaner, Southern Sri Ganganagar).
- Statement 2 is correct because the 30 cm Isohyet encompasses semi-arid districts like Barmer, Jodhpur, Nagaur, Churu, and Hanumangarh.
- Statement 3 is correct since the 40 cm Isohyet spans transition districts including Jalore, Pali, Didwana-Kuchaman, Sikar, and Jhunjhunu.

MEDIUM

Assertion (A): The spatial distribution of rainfall in Rajasthan exhibits a stark disparity, with the South-East recording the highest precipitation and the North-West recording the lowest.
Reason (R): As the monsoon winds advance from the South-West towards the North-East, they continuously shed their moisture load, leaving little to no precipitation potential by the time they reach the far North-West.

Select the correct answer from the codes below:

Both (A) and (R) are true, and (R) is the correct explanation of (A)

Both (A) and (R) are true, but (R) is not the correct explanation of (A)

(A) is true, but (R) is false

(A) is false, but (R) is true

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Both (A) and (R) are true, and (R) is the correct explanation of (A).
Core Concept: Cause-and-effect relationship between monsoon direction and rainfall disparity.

🧠 Solution Blueprint

Assertion Analysis: Rainfall is heavily skewed in Rajasthan, with the South-East getting maximum rainfall and the North-West getting minimum rainfall.
Reason Analysis: The progressive movement of monsoon winds in a South-West to North-East direction causes continuous moisture depletion, directly explaining why the North-West receives the least rainfall. Thus, the reason correctly justifies the assertion.

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MEDIUM

Consider the following statements regarding the climate classification of Rajasthan:

The General Climate Classification of Rajasthan is based on Temperature and Rainfall.
According to the General Climate Classification, the state is divided into five distinct parts.
Trewartha's individual climate classification is based primarily on Evaporation.

Which of the statements given above are correct?

1 and 2 only

2 and 3 only

1 and 3 only

1, 2 and 3

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is 1 and 2 only.
Core Concept: The General Climate Classification is based on Temperature and Rainfall, dividing Rajasthan into five parts.

🧠 Concept Blueprint

Statement 1 is correct: The General Classification uses basic meteorological parameters of Temperature (Tapman) and Rainfall (Varsha).
Statement 2 is correct: Under this general framework, Rajasthan's climate is partitioned into five distinct parts.
Statement 3 is incorrect: Trewartha's climate classification is based primarily on Rainfall, not evaporation (which is a key pillar of Thornthwaite's system).

HARD

Consider the following statement:
'The monsoon in Rajasthan acts as a moisture-transport system that sheds its cargo as it moves.'

Based on this, which region acts as the primary 'drain' or destination where the monsoon's capacity is most severely limited?

The South-East

The South-West

The Central Plains

The North-West

Explanation

🌟 Quick Verification

Direct Answer: The North-West.

🧠 Concept Blueprint

Conceptual Logic: If the monsoon is a transport system starting in the SW and moving NE, the North-West is the furthest point from the source of moisture. It is where the 'tank is empty'—hence, it receives the least rainfall.

HARD

Consider the following statements regarding CA'w and DA'w zones under Thornthwaite's system:

DA'w is identified as the largest climate region in Rajasthan according to Thornthwaite.
CA'w is described as the Sub-humid equivalent (Up-ardra Tulya Jalvayu) spanning from the south to the east.
DA'w climate is restricted exclusively to the extreme western desert border districts like Jaisalmer.

Which of the statements given above are correct?

1 and 2 only

2 and 3 only

1 and 3 only

1, 2, and 3

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is 1 and 2 only.
Core Concept: Spatial dominance and characteristics of CA'w and DA'w regions.

🧠 Concept Blueprint

Statement Evaluation:
- Statement 1 is correct: DA'w is the largest climate region in Rajasthan under Thornthwaite's classification.
- Statement 2 is correct: CA'w is the Sub-humid equivalent located across the south-to-east belt.
- Statement 3 is incorrect: DA'w covers east-central districts, whereas extreme western desert border districts like Jaisalmer belong to EA'd.

Pashu Parichar 1.12.2024

MEDIUM

What are the dry, hot, and dusty winds blowing in Rajasthan during the summer season called-

Loo

Khejri

Sukhovey

Karuran

Explanation

The hot and dry winds blowing in Rajasthan during the summer season (May-June) are known as 'Loo'.

CET: 07.01.2023

MEDIUM

According to Koppen's climate classification, Jalore, Sikar, Nagaur, and Jhunjhunu are included in which of the following climate regions?

BWhw

BShw

Bwkw

Bskw

Explanation

Jalore, Sikar, Nagaur, and Jhunjhunu districts fall under the BShw (Semi-Arid/Steppe) climate region.

MEDIUM

Consider the following statements regarding monsoon phenomena and their characteristics:

The bursting of the monsoon is marked by intense and heavy rainfall, primarily occurring between June to July.
The gap of the monsoon represents a period of 2 to 3 weeks of dry weather following the initial burst, typically spanning July to August.
There is a direct proportional relationship between the amount of rainfall received and the level of monsoon uncertainty.

Which of the statements given above are correct?

1 and 2 only

2 and 3 only

1 and 3 only

1, 2 and 3

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is 1 and 2 only.
Core Concept: Monsoon Phenomena & Uncertainty Dynamics.

🧠 Solution Blueprint

Statement 1 Validation: The bursting of the monsoon refers to the sudden, heavy onset of rainfall at the beginning of the season, typically occurring in June to July. This statement is correct.
Statement 2 Validation: The gap of the monsoon (or break in monsoon) is a dry spell lasting 2 to 3 weeks without rainfall, which follows the initial burst during July to August. This statement is correct.
Statement 3 Validation: There is an inverse relationship between the amount of rainfall and monsoon uncertainty (high rainfall means low uncertainty, and vice versa). Therefore, stating a direct proportional relationship is incorrect.

MEDIUM

Match the following terms related to the post-monsoon season with their specific descriptions:

Term	Description
A. Sharad Ritu	1. Sudden rise in temperature during retreat
B. Kartik Heat	2. October to November period
C. Mansoon Nivartan	3. November to mid-December (India)
D. Retreat Period	4. Another name for monsoon withdrawal

Select the correct code:

A-2, B-1, C-4, D-3

A-1, B-2, C-3, D-4

A-2, B-4, C-1, D-3

A-3, B-1, C-2, D-4

Explanation

🌟 Quick Verification

Direct Answer: A-2, B-1, C-4, D-3
Core Concept: Proper identification of terminology and temporal definitions is crucial for geography exams.

🧠 Concept Blueprint

Term Analysis:
- Sharad Ritu: The seasonal name encompassing the months of October and November.
- Kartik Heat: The specific term for the temperature spike characteristic of this season.
- Mansoon Nivartan: The formal name for the withdrawal of the monsoon, synonymous with Pratyavartan.
- Retreat Period (India): The broader timeframe covering the monsoon withdrawal from the Indian subcontinent, specifically November to mid-December.

MEDIUM

Mewat and Dang region are included in which of Koeppen's climate regions?

BShw

BWhw

Cwg

Explanation

Mewat and Dang (Eastern Rajasthan) fall under the 'Cwg' climate region.

MEDIUM

Arrange the following regions in descending order of their actual monsoon rainfall recorded in 2015:

Baran
Kota
Sawai Madhopur
Bundi

Select the correct sequence from the options below:

1, 3, 2, 4

1, 2, 3, 4

3, 1, 4, 2

2, 1, 4, 3

Explanation

The correct descending order of the regions based on their 2015 monsoon rainfall is:

Baran: 1593.5 mm (Highest)
Sawai Madhopur: 1333.1 mm (Second Highest)
Kota: 1252.1 mm (Third Highest)
Bundi: 1251.6 mm (Fourth Highest)

Thus, the correct sequence is 1, 3, 2, 4.

MEDIUM

DA'w climate is found in?

Mewar

Banswara, Dungarpur

Bundi, Sawai Madhopur

Bharatpur

Explanation

Bundi, Sawai Madhopur, Tonk, etc. districts fall under the DA'w climate region.

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