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Question 1481Question →

Arrange the following strategic maritime choke points and waterways in the correct sequence from West to East based on their geographical location (longitude):

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Answer

The correct West-to-East sequence of these maritime choke points is: Strait of Gibraltar → Suez Canal → Strait of Hormuz → Strait of Malacca.
Moving from West to East across the Eastern and Western Hemispheres: The Strait of Gibraltar is situated in the Western Hemisphere at ~5°W. Moving eastward into the Eastern Hemisphere, the Suez Canal is located at ~32°E, followed by the Strait of Hormuz at ~56°E in the Middle East, and finally the Strait of Malacca at ~101°E in Southeast Asia.

Step-by-Step Solution

1
Determine the longitude of the Strait of Gibraltar
Strait of Gibraltar lies at approximately 5°21' W longitude, making it the westernmost feature among the choices.
It separates Spain and Morocco at the western entry of the Mediterranean Sea.
2
Determine the longitude of the Suez Canal
The Suez Canal lies at approximately 32°20' E longitude.
It crosses the Isthmus of Suez in Egypt to link the Mediterranean Sea with the Red Sea.
3
Determine the longitude of the Strait of Hormuz
The Strait of Hormuz lies further east at approximately 56°15' E longitude.
It acts as the exit point of the Persian Gulf into the Gulf of Oman.
4
Determine the longitude of the Strait of Malacca
The Strait of Malacca is the easternmost feature at approximately 101°20' E longitude.
It lies in Southeast Asia between Sumatra and the Malay Peninsula.

Key Concept

Locational analysis of major global maritime choke points and waterways along longitudinal lines.
Question 1482Question →

With reference to the soil types and natural vegetation in India, consider the following statements:

1. Black soils (Regur) develop deep cracks during the dry season, leading to a phenomenon known as 'self-ploughing' and possess high moisture-retention capacity.
2. Red soils owe their characteristic color to a wide diffusion of iron in crystalline and metamorphic rocks, appearing yellow when in a hydrated form.
3. Tropical Thorn Forests thrive in regions experiencing annual rainfall exceeding 150 cm150\text{ cm} accompanied by high relative humidity.
4. Laterite soils are inherently rich in nitrogen, soluble plant nutrients, and lime, making them naturally suitable for intensive paddy cultivation without chemical fertilizers.

Which of the statements given above are correct?

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Answer: 1 and 2 only

Answer

1 and 2 only
The correct answer includes statements 1 and 2. Regur soils exhibit swelling-shrinking properties causing self-ploughing, while red soils obtain their red appearance from iron oxide diffusion and yellow tint upon hydration. Statements 3 and 4 are false due to incorrect precipitation limits for thorn vegetation and inaccurate nutrient profiles for intensely leached laterite soils.

Step-by-Step Solution

1
Evaluate Statement 1 regarding Black Soil (Regur).
Statement 1 is correct.
Black soil is highly argillaceous (clayey), expands when wet, and contracts upon drying to form deep wide cracks. This aids oxygenation ('self-ploughing') and retains moisture for prolonged periods.
2
Evaluate Statement 2 regarding Red Soil composition.
Statement 2 is correct.
Red soil develops on crystalline igneous and metamorphic rocks under low rainfall conditions. The ferric oxides impart a red shade, which turns yellow when hydrated.
3
Evaluate Statement 3 regarding Tropical Thorn Forests.
Statement 3 is incorrect.
Tropical Thorn Forests are characteristic of semi-arid areas with low annual rainfall (less than 70 cm70\text{ cm} or 50 cm50\text{ cm}), such as parts of Rajasthan, Gujarat, and dry interior Deccan plateau.
4
Evaluate Statement 4 regarding Laterite Soil fertility.
Statement 4 is incorrect.
Laterite soils result from intense leaching due to heavy tropical rains. Organic matter, nitrogen, phosphate, and calcium are washed away, leaving the soil poor in nutrients and high in iron oxides and aluminum.

Key Concept

Soil formation processes and vegetation climatic thresholds in India
Estimated Time:2m 0s
Question 1483Question →

Arrange the following major ocean floor relief zones in their correct sequence starting from the coastline moving seaward towards the deep ocean basin:

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Answer

The correct seaward sequence of ocean floor relief features from the coastline to the deep ocean basin is Continental Shelf, followed by Continental Slope, Continental Rise, and finally Abyssal Plain.
The ocean basin relief transitions systematically from the continent towards the deep ocean. Moving seaward from the coast, one encounters the shallow Continental Shelf, followed by the sharply inclined Continental Slope, then the thick sediment fan of the Continental Rise, and ultimately the broad, flat Abyssal Plain.

Step-by-Step Solution

1
Identify the feature adjacent to the land boundary.
The Continental Shelf is the submerged extension of the continent directly adjoining the coast.
It represents the shallowest part of the ocean margin.
2
Determine the transition zone from shallow shelf to deep ocean.
The Continental Slope begins at the shelf break and plunges steeply downward.
It marks the boundary between continental crust and oceanic region.
3
Identify the depositional zone at the base of the slope.
The Continental Rise forms at the base where thick sediment fans merge.
It eases the gradient between the steep slope and the level ocean floor.
4
Locate the ultimate flat deep-sea floor.
The Abyssal Plain extends across vast distances of the deep ocean basin.
It sits at depths of 3,000 to 6,000 meters, representing the deep oceanic floor.

Key Concept

Ocean floor relief divisions and continental margin morphometry
Question 1484Question →

In medieval Indian administration, which term was specifically used to designate the military commanders who were granted land territories to govern and collect revenue under the Vijayanagara Empire?

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Answer: Amara-nayakas

Answer

Amara-nayakas were the military commanders under the Vijayanagara Empire who were granted territories for administration and revenue collection.
The Amara-nayaka system was a major political innovation of the Vijayanagara Empire. Amara-nayakas were military commanders who were given territories to govern by the Raya (king). They collected taxes from peasants, traders, and craftspersons, maintained a stipulated military force, and sent annual tribute to the king.

Step-by-Step Solution

1
Identify the historical empire and administrative role specified in the stem
The question asks for the title of military commanders holding land grants in the Vijayanagara Empire.
Different medieval dynasties used distinct terminology for military land assignments.
2
Recall administrative titles across medieval Indian polities
Vijayanagara utilized the Nayankara system featuring Amara-nayakas, whereas Delhi Sultanate used Iqta and Mughals used Mansabdari/Jagirdari.
Distinguishing regional and dynastic administrative nomenclature leads directly to the correct term.

Key Concept

Vijayanagara Administration and Nayankara System
Question 1485Question →

In October 1943, Subhas Chandra Bose proclaimed the establishment of the Provisional Government of Free India (Arzi Hukumat-e-Azad Hind) in Singapore. Which of the following highlights a key administrative and territorial event associated with this provisional government?

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Answer: It received formal administrative transfer of the Andaman and Nicobar Islands from Japan, subsequently renaming them Shaheed Dweep and Swaraj Dweep.

Answer

The Provisional Government of Free India received the formal transfer of the Andaman and Nicobar Islands from Japan, which Subhas Chandra Bose renamed Shaheed Dweep and Swaraj Dweep.
Following the establishment of the Provisional Government of Free India in October 1943, Japanese Prime Minister Hideki Tojo announced the transfer of the Andaman and Nicobar Islands to the Provisional Government at the Tokyo Conference in November 1943. Subhas Chandra Bose visited Port Blair in December 1943, unfurled the Indian national flag, and designated them as Shaheed Dweep (Martyr Island) and Swaraj Dweep (Self-rule Island).

Step-by-Step Solution

1
Identify the proclamation context
Subhas Chandra Bose proclaimed the Arzi Hukumat-e-Azad Hind in Singapore on October 21, 1943.
Establishing the historical timeline and location of the Provisional Government.
2
Analyze territorial acquisitions and administrative decisions
In November 1943, during the Greater East Asia Conference in Tokyo, Japan announced the handover of the Andaman and Nicobar Islands to the Provisional Government. In December 1943, Bose visited Port Blair, raised the Indian tricolor, and renamed the islands Shaheed (Martyr) Dweep and Swaraj (Self-rule) Dweep.
This territorial transfer marked the first sovereign land under the jurisdiction of the Azad Hind Government.
3
Evaluate distractors regarding headquarters movement, leadership, and diplomatic alliances
Headquarters moved to Rangoon in January 1944; Captain Mohan Singh was not in command in late 1943; and recognition came from Axis powers, not Allied powers.
Eliminates incorrect historical claims.

Key Concept

Provisional Government of Free India (Arzi Hukumat-e-Azad Hind) and INA Territorial Administration
Estimated Time:1m 30s
Question 1486Question →

Arrange the following key political associations and events from the early phase of Indian nationalism in correct chronological order, from earliest to latest:

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Answer

The correct chronological order from earliest to latest is: Formation of the East India Association in London (1866) ��� Establishment of the Poona Sarvajanik Sabha (1870) → Foundation of the Indian Association of Calcutta (1876) → Enactment of the Vernacular Press Act (1878) → Convening of the First National Conference in Calcutta (1883).
The correct sequence begins with the East India Association established in London in 1866, followed by the Poona Sarvajanik Sabha in 1870, the Indian Association of Calcutta in July 1876, the Vernacular Press Act in March 1878, and culminates in the First National Conference in December 1883.

Step-by-Step Solution

1
Identify the founding year of the East India Association
The East India Association was established in London by Dadabhai Naoroji in 1866.
It represented one of the earliest overseas political efforts to present Indian grievances to the British Parliament.
2
Identify the founding year of the Poona Sarvajanik Sabha
The Poona Sarvajanik Sabha was formally established in 1870 by Mahadev Govind Ranade, G. V. Joshi, and others.
It was created to channel popular grievances in Western India to colonial administrators.
3
Determine the date of foundation of the Indian Association of Calcutta
Surendranath Banerjee and Ananda Mohan Bose founded the Indian Association of Calcutta in July 1876.
It aimed to supersede the landholder-dominated British Indian Association with an educated middle-class political organisation.
4
Determine the year of the Vernacular Press Act
The Vernacular Press Act was passed by Lord Lytton's government in March 1878.
It was a repressive measure designed to stifle anti-colonial criticism in native language newspapers.
5
Identify the date of the First National Conference in Calcutta
The First National Conference was convened by the Indian Association in Calcutta in December 1883.
It gathered representatives from across India, serving as an immediate forerunner to the 1885 Indian National Congress.

Key Concept

Chronology of Pre-Congress Political Associations and Nationalist Milestones
Estimated Time:2m 0s
Question 1487Question →

Who among the following revolutionary leaders led the famous Chittagong Armoury Raid in April 1930?

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Answer: Surya Sen

Answer

Surya Sen
Surya Sen (popularly known as 'Masterda') organized and led the Chittagong Armoury Raid on April 18, 1930, aiming to capture British armouries and disrupt colonial communications in Bengal.

Step-by-Step Solution

1
Identify the revolutionary leader associated with the Chittagong Armoury Raid of April 18, 1930.
Surya Sen led a group of revolutionaries under the banner of the Indian Republican Army (Chittagong Branch) to raid the police and auxiliary armouries.
This event was one of the most prominent revolutionary nationalist actions in Bengal during the freedom struggle.

Key Concept

Chittagong Armoury Raid and Surya Sen
Question 1488Question →

Chronological clarity is essential for analyzing the evolution of early Indian society and polity. Arrange the following historical developments of Ancient India in chronological order from earliest to latest:

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Answer

The correct chronological order from earliest to latest is: Flourishing of the Mature Harappan urban civilization (c. 2600–1900 BCE), Composition of the Rigveda (c. 1500���1000 BCE), Foundation of the Mauryan Empire (c. 321 BCE), and Commencement of the Gupta Era (c. 319–320 CE).
The historical sequence follows a strict chronological progression: the Bronze Age Mature Harappan urbanization (c. 2600–1900 BCE) comes first, followed by the Early Vedic Rigvedic age (c. 1500–1000 BCE), the iron-age pan-Indian unification under the Mauryan Empire (c. 321 BCE), and finally the classical age ushered in by the Gupta Era (c. 319 CE).

Step-by-Step Solution

1
Determine the date range for the Mature Harappan urban phase.
The Mature Harappan civilization existed from roughly 2600 BCE to 1900 BCE.
This represents the earliest urban Bronze Age civilization in the Indian subcontinent.
2
Determine the era of the composition of the Rigveda.
The Early Vedic period is dated from c. 1500 BCE to 1000 BCE.
Rigvedic culture emerged in northern South Asia after the decline of the urban Harappan centers.
3
Determine the founding date of the Mauryan Dynasty.
The Mauryan Empire was established around 321 BCE.
Chandragupta Maurya unified much of northern India after defeating the Nanda ruler and Seleucus I Nicator.
4
Determine the start of the Gupta Era.
The Gupta Era commenced in 319–320 CE.
Chandragupta I's coronation and imperial expansion marked the formal start of the Gupta calendar.

Key Concept

Chronological Sequence of Early Indian Civilizations and Dynastic Eras
Question 1489Question →

Arrange the following spiritual figures of the Bhakti and Sufi movements in correct chronological order based on their period of historical activity in India, from the earliest to the latest:

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Answer

The correct chronological sequence from earliest to latest is: Adi Shankaracharya (early 8th century CE), followed by Ramanujacharya (11th–12th century CE), Khwaja Moinuddin Chishti (late 12th century CE), and Kabir Das (15th century CE).
The chronological sequence correctly orders these spiritual reformists from the early 8th century CE to the 15th century CE based on historical historical milestones: Adi Shankaracharya (c. 788–820 CE) -> Ramanujacharya (c. 1017–1137 CE) -> Khwaja Moinuddin Chishti (c. 1142–1236 CE, active in Ajmer c. 1192 CE) -> Kabir Das (c. 1398–1518 CE).

Step-by-Step Solution

1
Identify the historical era of Adi Shankaracharya
Adi Shankaracharya belongs to the early 8th century CE (c. 788–820 CE), making him the earliest figure among the list.
Establishing Advaita Vedanta occurred during the early medieval period long before the formal rise of later regional Bhakti saints.
2
Determine the timeframe of Ramanujacharya
Ramanujacharya lived in the 11th to 12th centuries CE (c. 1017–1137 CE).
His Vishishtadvaita philosophy developed in response to strictly non-dualistic interpretations centuries after Shankaracharya.
3
Trace the establishment of the Chishti order by Khwaja Moinuddin Chishti
Khwaja Moinuddin Chishti arrived in Ajmer around 1192 CE during the late 12th century.
The spread of the Chishti Silsila in Northern India aligns with the establishment of Delhi Sultanate rule.
4
Pinpoint the timeline of Sant Kabir Das
Kabir Das belongs to the 15th century CE during the height of the Nirguna Bhakti movement.
Kabir's vernacular poetry reflects socio-religious syntheses characteristic of the 15th-century Sultanate era.

Key Concept

Chronological evolution of Bhakti and Sufi movements in India
Question 1490Question →

Match the atmospheric pressure systems and circulation features associated with the Indian monsoon mechanism listed in List-I with their corresponding meteorological characteristics and roles described in List-II. Which of the following represents the correct set of pairings?

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Items

Mascarene High
Tibetan Anticyclone
Somali Jet (Findlater Jet)
Tropical Easterly Jet (TEJ)

Matches

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Answer

Mascarene High pairs with the semi-permanent subtropical high-pressure cell near 30°S in the southern Indian Ocean; Tibetan Anticyclone pairs with the warm-core upper-tropospheric high-pressure system over the plateau; Somali Jet pairs with the low-level cross-equatorial wind stream off East Africa; and Tropical Easterly Jet pairs with the upper-tropospheric wind stream at 13°N latitude.
The correct pairings accurately link each monsoon circulation component to its distinct altitude layer and physical role: the Southern Hemisphere Mascarene High drives low-level cross-equatorial flow; the Tibetan Anticyclone provides upper-level divergence; the Somali Jet serves as the low-level moisture highway across the Arabian Sea; and the Tropical Easterly Jet maintains upper-tropospheric easterly momentum over peninsular India.

Step-by-Step Solution

1
Identify the oceanic source region of the southwest monsoon wind vectors.
The Mascarene High is identified as the high-pressure region near 30°S in the southern Indian Ocean.
It creates the pressure gradient necessary to drive cross-equatorial trade winds towards South Asia.
2
Analyze upper-tropospheric heat-engine mechanisms over Eurasia.
The Tibetan Anticyclone is identified as the warm-core upper-tropospheric high resulting from plateau heating.
Sensible heating of the elevated plateau and condensation latent heat produce strong upper-air outflow.
3
Determine the low-level oceanic moisture transport jet.
The Somali Jet is recognized as the low-level coastal jet off East Africa.
Topographic steering by African highlands intensifies cross-equatorial winds feeding the Arabian Sea branch.
4
Correlate upper-level easterly jet streams with peninsular precipitation dynamics.
The Tropical Easterly Jet is matched with the 13°N upper-tropospheric easterly flow.
The outflow from the Tibetan high establishes this upper easterly jet, which promotes surface convergence and rain-bearing depressions over India.

Key Concept

Indian Monsoon Atmospheric Driving Mechanisms and Pressure Systems
Estimated Time:2m 0s
Question 1491Question →

South America consists of twelve sovereign nations, most of which have coastlines bordering major ocean bodies. Which of the following countries in South America is landlocked?

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Answer: Bolivia

Answer

Bolivia is a landlocked country in South America.
Bolivia is bounded by land on all sides and does not possess direct territorial access to any ocean, making it one of the two landlocked countries in South America alongside Paraguay.

Step-by-Step Solution

1
Analyze the geographical features and territorial boundaries of South American nations.
South America has only two landlocked countries: Bolivia and Paraguay.
All other sovereign states on the South American continent possess direct access to either the Pacific or Atlantic Oceans.

Key Concept

Landlocked Countries of South America
Question 1492Question →

Match the regional coastal centers of the Salt Satyagraha (1930) during the Civil Disobedience Movement in List-I with the corresponding nationalist leaders who organized and led the campaigns in List-II:

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Items

Vedaranyam Salt March (Tanjore Coast)
Payyanur Salt March (Malabar Coast)
Dharasana Salt Works Raid (Gujarat Coast)
Inchudi Salt Satyagraha (Balasore Coast)

Matches

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Answer

Vedaranyam Salt March matches with C. Rajagopalachari; Payyanur Salt March matches with K. Kelappan; Dharasana Salt Works Raid matches with Sarojini Naidu; and Inchudi Salt Satyagraha matches with Gopabandhu Choudhury.
Following Mahatma Gandhi's historic Dandi March (March–April 1930), provincial leaders mobilized mass participation across coastal India. C. Rajagopalachari conducted the Vedaranyam March in Tamil Nadu, K. Kelappan organized the Calicut-to-Payyanur March in Malabar, Sarojini Naidu led the famous non-violent raid on the Dharasana Salt Works, and Gopabandhu Choudhury mobilized the salt movement at Inchudi in Orissa.

Step-by-Step Solution

1
Identify the leader for the Tamil Nadu campaign
C. Rajagopalachari organized the march from Trichinopoly to Vedaranyam in April 1930.
Gandhi's Dandi March inspired regional leaders to launch parallel salt marches in coastal provinces.
2
Identify the leader for the Kerala campaign
K. Kelappan walked from Calicut to Payyanur to break salt laws on the Malabar coast.
He led the Kerala Pradesh Congress Committee's salt resistance efforts.
3
Identify the leader for the Dharasana action in Gujarat
Sarojini Naidu led the direct non-violent assault on the Dharasana salt works following Gandhi's arrest.
She took over leadership alongside Imam Sahib and Manilal Gandhi.
4
Identify the leader for the Orissa campaign
Gopabandhu Choudhury organized the Inchudi salt march near Balasore.
Inchudi was the second most prominent center of salt manufacture during the 1930 Satyagraha after Dandi.

Key Concept

Regional Leadership and Centers of the 1930 Salt Satyagraha
Question 1493Question →

Match the mountain passes and relief gaps of India in List-I with their corresponding physiographic locations or structural ranges in List-II:

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Items

Diphu Pass
Lipulekh Pass
Banihal Pass
Shencottah Gap

Matches

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Answer

The correct matches are: Diphu Pass matches with the Tri-junction of India, China, and Myanmar in the Purvanchal / Eastern Himalayas; Lipulekh Pass matches with the Kumaon Himalayas connecting Uttarakhand with the Tibetan Plateau; Banihal Pass matches with the Pir Panjal Range in the Lesser Himalayas; and Shencottah Gap matches with the Southern Western Ghats connecting Kollam with Madurai.
Each pass correctly maps to its exact physiographic range or regional location: Diphu Pass is located at the India-China-Myanmar tri-junction in Arunachal Pradesh; Lipulekh Pass belongs to the Kumaon Himalayas in Uttarakhand; Banihal Pass spans the Pir Panjal Range in Jammu and Kashmir; and Shencottah Gap cuts through the southern Western Ghats between Kerala and Tamil Nadu.

Step-by-Step Solution

1
Identify the geographical region of Diphu Pass
Diphu Pass lies on the McMahon Line at the eastern border of Arunachal Pradesh, serving as the tri-junction between India, China, and Myanmar.
Understanding strategic Himalayan pass locations along international borders.
2
Determine the physiographic association of Lipulekh Pass
Lipulekh Pass is situated in the Pithoragarh district of Uttarakhand within the Kumaon Himalayas, serving as a gateway for the Kailash-Manasarovar Yatra.
Differentiating passes across Himalayan longitudinal sectors.
3
Locate Banihal Pass within the mountain ranges of Jammu & Kashmir
Banihal Pass cuts across the Pir Panjal Range of the Middle/Lesser Himalayas at an elevation of approximately 2,832 meters.
Identifying major mountain gaps in the Northwestern Himalayas.
4
Analyze the structural gap of Shencottah in Peninsular India
Shencottah Gap is located south of the Palghat Gap between the Cardamom Hills and Agasthyamalai Hills in the southern Western Ghats, facilitating inter-state transit between Kerala and Tamil Nadu.
Distinguishing Peninsular mountain passes and structural breaks.

Key Concept

Himalayan and Peninsular Relief Features and Passes of India
Question 1494Question →

Match the Gandhian movements and campaigns in List-I with their primary features or historical developments in List-II:

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Items

Kheda Satyagraha (1918)
Non-Cooperation Movement (1920)
Dandi Salt March (1930)
Individual Satyagraha (1940)

Matches

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Answer

Kheda Satyagraha (1918) matches with peasant revenue suspension led alongside Vallabhbhai Patel; Non-Cooperation Movement (1920) matches with surrender of titles and legal/educational boycotts; Dandi Salt March (1930) matches with coastal march breaching the salt monopoly to launch Civil Disobedience; Individual Satyagraha (1940) matches with limited campaign featuring Acharya Vinoba Bhave as the first satyagrahi.
Kheda Satyagraha (1918) was a local agrarian movement against revenue collection following crop failure, where Sardar Patel organized the peasants. Non-Cooperation Movement (1920) involved renouncing official titles and boycotting courts, schools, and foreign goods. Dandi Salt March (1930) marked the symbolic inauguration of Civil Disobedience by breaking the government salt law. Individual Satyagraha (1940) was launched with Acharya Vinoba Bhave as the pioneer satyagrahi to protest Britain's inclusion of India in World War II without consent.

Step-by-Step Solution

1
Identify the historical context and main leaders of the 1918 Kheda Satyagraha.
Kheda involved peasants suffering from famine and crop failure who demanded tax relief under the leadership of Gandhi and Sardar Patel.
Establishes the link between Kheda Satyagraha (1918) and the revenue refusal struggle.
2
Examine the constructive and boycott programmes of the Non-Cooperation Movement (1920).
It focused on non-violent non-cooperation via surrendering titles and boycotting government entities.
Establishes the link between Non-Cooperation Movement (1920) and title surrender / institutional boycott.
3
Analyze the purpose and outcome of the 1930 Dandi Salt March.
Gandhi marched to Dandi to manufacture salt illegally, initiating the wider Civil Disobedience Movement.
Establishes the link between Dandi Salt March (1930) and breaching the salt monopoly.
4
Review the background of the 1940 Individual Satyagraha.
It was designed as a controlled moral protest against forced Indian participation in World War II, led first by Acharya Vinoba Bhave.
Establishes the link between Individual Satyagraha (1940) and Acharya Vinoba Bhave's role.

Key Concept

Key features, leadership, and developments associated with major Gandhian mass movements and localized struggles.
Estimated Time:1m 30s
Question 1495Question →

Consider the following statements regarding the factors influencing ocean surface salinity across different global zones:

1. The highest ocean surface salinity is recorded at the equator due to maximum solar insolation and intense evaporation.
2. Enclosed seas in arid subtropical zones, such as the Red Sea, exhibit significantly higher salinity than open ocean waters at identical latitudes.
3. Massive river runoff combined with low atmospheric evaporation results in low surface salinity levels in the Baltic Sea.

Which of the statements given above are correct?

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Answer: 2 and 3 only

Answer

Statements 2 and 3 are correct, while statement 1 is incorrect.
The combination stating statements 2 and 3 are correct is valid because equatorial surface salinity is diluted by heavy convective precipitation, whereas subtropical enclosed seas record high salinity due to high evaporation, and subpolar seas with abundant river inflow exhibit low salinity.

Step-by-Step Solution

1
Evaluate Statement 1 regarding equatorial salinity
Statement 1 is incorrect.
Although equatorial regions receive high solar insolation, intense cloud cover and heavy daily rainfall (precipitation exceeding evaporation) lower the surface salinity to around 35 ppt, whereas maximum salinity (over 37-38 ppt) occurs in the subtropical belt (20°-30° N/S) where high evaporation coincides with clear skies and sinking dry air.
2
Evaluate Statement 2 regarding enclosed seas in subtropical climates
Statement 2 is correct.
Enclosed or semi-enclosed seas located in hot, arid subtropical zones (such as the Red Sea and Persian Gulf) experience extremely high evaporation and minimal freshwater river influx, resulting in surface salinities reaching 41 ppt or higher.
3
Evaluate Statement 3 regarding high-latitude enclosed seas
Statement 3 is correct.
The Baltic Sea receives massive freshwater input from numerous rivers and experiences low temperatures with minimal evaporation, maintaining exceptionally low salinity levels (often below 10 ppt).

Key Concept

Ocean Surface Salinity Distribution and Influencing Factors
Question 1496Question →

Match the prominent leaders of the Revolt of 1857 listed in Column A with their primary regional centers of leadership in Column B.

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Items

Nana Saheb
Begum Hazrat Mahal
Rani Lakshmibai
Kunwar Singh

Matches

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Answer

Nana Saheb matches with Kanpur, Begum Hazrat Mahal matches with Lucknow, Rani Lakshmibai matches with Jhansi, and Kunwar Singh matches with Bihar (Jagdishpur).
During the Revolt of 1857, specific prominent figures spearheaded resistance in distinct regions: Nana Saheb in Kanpur, Begum Hazrat Mahal in Lucknow, Rani Lakshmibai in Jhansi, and Kunwar Singh in Bihar.

Step-by-Step Solution

1
Identify the leadership center for Nana Saheb.
Nana Saheb was the adopted son of Peshwa Baji Rao II and led the troops in Kanpur.
Establishing the historical association between the leader and city.
2
Identify the leadership center for Begum Hazrat Mahal.
Begum Hazrat Mahal led the rebellion in Lucknow on behalf of her young son Birjis Qadr.
Connecting the leader to Awadh/Lucknow regional resistance.
3
Identify the leadership center for Rani Lakshmibai.
Rani Lakshmibai valiantly resisted British annexation attempts under Doctrine of Lapse in Jhansi.
Direct historical attribution of Jhansi leadership.
4
Identify the leadership center for Kunwar Singh.
Zamindar Kunwar Singh led the armed resistance against the British in Jagdishpur, Bihar.
Connecting regional leader to Bihar rebellion sector.

Key Concept

Key leaders and their regional centers during the Revolt of 1857
Question 1497Question →

With reference to the administrative structure and reforms of the Bahmani Kingdom under Prime Minister Mahmud Gawan, consider the following statements:

1. Mahmud Gawan reorganized the administration by subdividing the four traditional provinces (Tarafs) into eight administrative units to curb the regional power of provincial governors (Tarafdars).
2. He introduced systematic land measurement and brought a significant portion of provincial lands directly under the central government as crown land (Khalsa).
3. In the Bahmani administrative hierarchy, the term 'Taraf' denoted the smallest village unit, whereas 'Pargana' represented the highest provincial division presided over by a Tarafdar.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

Statements 1 and 2 are correct. Statement 3 is incorrect because a Taraf was a major province, not a village unit.
The correct response includes statements 1 and 2 only. Mahmud Gawan served as the Grand Vizier of the Bahmani Sultanate under Muhammad Shah III. To strengthen central royal authority, he reorganized the four large Tarafs into eight manageable administrative provinces and brought large tracts of land under direct crown control (Khalsa). Statement 3 is wrong because Taraf was the highest provincial unit, not a village unit.

Step-by-Step Solution

1
Analyze Statement 1 regarding provincial reorganization
Statement 1 is correct. Mahmud Gawan divided the original four large provinces (Tarafs—Gulbarga, Daulatabad, Berar, and Bidar) into eight smaller units to limit the military and political leverage of Tarafdars.
Provincial governors previously commanded huge armies and revenue bases, posing a threat to central royal authority.
2
Analyze Statement 2 regarding agrarian and revenue reforms
Statement 2 is correct. Gawan initiated the systematic survey and measurement of agricultural lands and expanded Khalsa (royal) land to ensure direct revenue collection into the royal treasury.
This reduced the financial dependence of the central state on provincial nobles.
3
Analyze Statement 3 regarding administrative terminology
Statement 3 is incorrect. Taraf referred to the province (governed by a Tarafdar), while Parganas were sub-districts comprising groups of villages.
Confusing Taraf with a village unit misrepresents the Bahmani administrative structure.

Key Concept

Bahmani Provincial Administration and Administrative Reforms of Mahmud Gawan
Question 1498Question →

Chronological precision is essential for understanding the evolution of socio-religious reform movements in 19th-century India. Arrange the following reform initiatives in the correct chronological order of their establishment, starting from the earliest to the latest:

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct chronological sequence of establishment is: Formation of Paramahansa Mandali in Bombay (1849), followed by the Establishment of Rahnumai Mazdayasnan Sabha (1851), followed by the Foundation of the Deoband School (1866), and finally the Establishment of the Indian National Social Conference (1887).
The correct sequence follows the exact timeline of establishment: Paramahansa Mandali was formed in 1849 in Bombay; Rahnumai Mazdayasnan Sabha was established shortly after in 1851; the Deoband School (Darul Uloom) was founded in 1866 in the United Provinces; and the Indian National Social Conference was established in 1887 by M.G. Ranade as an All-India body for social reforms.

Step-by-Step Solution

1
Identify the founding year of Paramahansa Mandali
Paramahansa Mandali was established in Bombay in 1849.
It was one of the earliest secret reform societies in Maharashtra working toward caste abolition and monotheism.
2
Identify the founding year of Rahnumai Mazdayasnan Sabha
Rahnumai Mazdayasnan Sabha was formed in 1851.
Parsi leaders including Naoroji Furdonji and Dadabhai Naoroji established it to modernize Parsi religious customs and promote women's education.
3
Identify the founding year of the Deoband Movement
Darul Uloom Deoband was founded in 1866.
Muhammad Qasim Nanautavi and Rashid Ahmad Gangohi started the seminary in 1866 to revitalize Islamic religious instruction.
4
Identify the founding year of the Indian National Social Conference
The Indian National Social Conference was founded in 1887.
M.G. Ranade and Raghunath Rao established it in 1887 during the Madras session of the Indian National Congress to focus explicitly on social legislation and reform.
5
Arrange the events chronologically
The correct chronological order is 1849 -> 1851 -> 1866 -> 1887.
Placing Paramahansa Mandali first, followed by Rahnumai Mazdayasnan Sabha, Deoband School, and Indian National Social Conference.

Key Concept

Chronology of 19th-Century Indian Socio-Religious Organizations
Estimated Time:2m 0s
Question 1499Question →

Consider the following statements regarding the phenomenon of a 'break' during the Indian summer monsoon season:

1. During a monsoon break, rainfall decreases significantly over most of the plains of India, while heavy precipitation concentrates along the Himalayan foothills.
2. A monsoon break occurs when the monsoon trough shifts northward from its normal position toward the foot of the Himalayas.
3. The occurrence of monsoon breaks in July and August is primarily driven by the migration of the Inter-Tropical Convergence Zone (ITCZ) into the Southern Hemisphere.

Which of the statements given above are correct?

Select all that apply

Show answer & explanation

Answer: Statement 1 and Statement 2

Answer

Statements 1 and 2 are correct.
The correct answer includes Statement 1 and Statement 2. During July and August, when the monsoon trough shifts from its normal position over the Indo-Gangetic plain to the foot of the Himalayas, rainfall ceases over central and northern plains, while heavy downpours occur along the slopes of the Himalayas.

Step-by-Step Solution

1
Analyze Statement 1
During a break period, dry conditions prevail over northern and central Indian plains, but heavy rainfall shifts to the Himalayan foothills, causing floods in rivers like the Ganga tributaries.
Statement 1 is factually correct.
2
Analyze Statement 2
The trough axis moves northward to the foot of the Himalayas, leading to rainfall over the mountains while suppressing convective activity over central India.
Statement 2 correctly identifies the synoptic cause of the break.
3
Analyze Statement 3
In peak summer (July-August), the ITCZ is located over Northern India (20∘N−25∘N20^\circ\text{N}-25^\circ\text{N}). Breaks are intra-seasonal oscillations, not caused by Southern Hemisphere retreat of the ITCZ.
Statement 3 is incorrect.

Key Concept

Break in the Monsoon
Question 1500Question →

Regarding the pedological properties, natural vegetation dynamics, and ecological distributions across India, which of the following statements are correct?

Select all that apply

Show answer & explanation

Answer: Peaty soils in coastal Kerala (locally termed Kari soils) are characterized by heavy organic matter accumulation, high acidity, and formation under submerged anaerobic conditions.; Shola forests occurring above 1,500 meters altitude in the Nilgiris and Anaimalai hills represent stunted temperate evergreen forest patches set within rolling grasslands.

Answer

The correct statements are the ones describing the anaerobic, highly acidic peaty Kari soils of coastal Kerala and the high-altitude montane temperate Shola forest patches of the Nilgiri and Anaimalai ranges.
The statement regarding peaty soils accurately captures the formation of Kari soils in coastal Kerala under submerged anaerobic conditions resulting in rich humus and high acidity. Additionally, the statement about Shola forests correctly describes the unique montane temperate evergreen patches nestled within high-altitude grasslands of the Nilgiris and Anaimalai hills.

Step-by-Step Solution

1
Evaluate the statement on peaty soils (Kari soils) of coastal Kerala.
Peaty soils form in waterlogged, humid coastal regions with rich vegetation growth, creating heavy organic matter deposition (up to 40-50%) and high soil acidity due to iron sulfide oxidization under anaerobic conditions.
Validates the geochemical and hydrological conditions governing Kerala peaty soil formation.
2
Evaluate the statement regarding Tropical Wet Evergreen forest canopy and species composition.
Evergreen forests of the Western Ghats feature intense biodiversity with layered stratifications rather than mono-species dominance.
Exposes the misconception that wet evergreen biomes exhibit single-species stands.
3
Evaluate the statement on Shola vegetation in Southern India.
In the Nilgiri, Palani, and Anaimalai ranges above 1,500 meters, montane vegetation manifests as stunted temperate evergreen forests (Sholas) in valleys, surrounded by subtropical grassland ecosystems.
Confirms the elevational and topographic distribution of Shola vegetation.
4
Evaluate the statement on Black soil composition and moisture retention mechanisms.
Black soil (Regur) moisture retention and deep cracking (self-ploughing) stem from fine-grained montmorillonite clay swell-shrink dynamics in semi-arid basaltic trap regions, not coarse quartz illuviation under heavy rainfall.
Corrects the mineralogical and climatic misattribution of regur soil physics.

Key Concept

Pedological and Ecological Characteristics of Indian Soils and Natural Vegetation
Estimated Time:2m 0s
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