Match List-I with List-II and select the correct answer using the code given below the Lists : List-I (Farming area) A.Doab B.Char C.Maidan D.Terai List-II (State) 1. Assam 2. Karnataka 3. Punjab 4. Uttar Pradesh Code :

1. Physiographic Divisions of the Northern Plains (basic)

The Northern Plains of India are a vast alluvial expanse formed by the continuous deposition of sediment from three major river systems: the Indus, Ganga, and Brahmaputra. While these plains often appear flat, they possess diverse relief features that define their agricultural and ecological character. Based on variations in relief and soil composition, the plains are divided into four distinct geomorphological zones as one moves from the Himalayan foothills southward CONTEMPORARY INDIA-I, Geography Class IX, Chapter 2, p. 11. At the very edge of the Shiwalik foothills lies the Bhabar. This is a narrow belt, about 8 to 10 km wide, comprised of heavy rocks, pebbles, and boulders deposited by descending mountain streams. Because this belt is so porous, smaller streams often disappear underground, only to re-emerge further south INDIA PHYSICAL ENVIRONMENT, Geography Class XI, Chapter 2, p. 11. South of the Bhabar is the Tarai (or Terai) belt. This is a damp, marshy, and swampy zone where the re-emerging rivers create a thick forest cover and rich biodiversity. Over time, much of the Tarai has been cleared for intensive agriculture, particularly in states like Uttar Pradesh. The deeper parts of the plains consist of two types of alluvial soil, categorized by their age and proximity to river channels:

Feature	Bhangar	Khadar
Age	Older alluvium	Younger, newer alluvium
Location	Higher ground, above flood levels (forming terraces)	Lower floodplains, near river channels
Soil Content	Contains calcareous deposits called Kankar	Fine silt and clay, renewed by annual floods
Fertility	Less fertile than Khadar	Highly fertile; ideal for intensive farming

Additionally, the plains are characterized by regional features like the Doab (the land between two rivers, such as the Ganga-Yamuna Doab) and the Chars (riverine islands and sandbars typical of the Brahmaputra’s braided channels in Assam) CONTEMPORARY INDIA-I, Geography Class IX, Chapter 3, p. 21.

Sources: CONTEMPORARY INDIA-I, Geography Class IX, Chapter 2: Physical Features of India, p.11; INDIA PHYSICAL ENVIRONMENT, Geography Class XI, Chapter 2: Structure and Physiography, p.11; CONTEMPORARY INDIA-I, Geography Class IX, Chapter 3: Drainage, p.21

2. Riverine Landforms: The Concept of Doab (basic)

To understand the geography of Northern India, one must first grasp the concept of a Doab. The word is a beautiful combination of two Persian roots: 'Do' meaning two and 'Ab' meaning water. Therefore, a Doab refers to the fertile tract of land situated between two converging rivers. These regions are the heart of India's agricultural prosperity because they are composed of rich alluvial deposits brought down by Himalayan rivers. CONTEMPORARY INDIA-I, Chapter 2: Physical Features of India, p.11

The most famous application of this naming convention is found in the state of Punjab. Just as 'Doab' means two waters, 'Punjab' is derived from 'Punj' (five) and 'Ab' (water), signifying the land of five rivers: the Jhelum, Chenab, Ravi, Beas, and Satluj. The plains here are not just flat land; they are a series of distinct doabs, each named after the rivers that bound them. For instance, the Bari Doab lies between the Beas and the Ravi rivers, while the Bist Doab is nestled between the Beas and the Satluj. Geography of India, Chapter 2: Physiography, p.39

Beyond Punjab, the Ganga-Yamuna Doab is perhaps the most historically and economically significant region in India. Stretching across present-day Uttar Pradesh, this fertile wedge was the seat of ancient civilizations and powerful kingdoms. For example, the ancient city of Hastinapura, mentioned in the Mahabharata, was located in the Upper Ganga Doab. Because these areas are consistently replenished by silt during floods, they have supported dense populations and intensive farming for millennia. THEMES IN INDIAN HISTORY PART I, Chapter: Kinship, Caste and Class, p.75

Sources: CONTEMPORARY INDIA-I, Chapter 2: Physical Features of India, p.11; Geography of India, Chapter 2: Physiography, p.39; THEMES IN INDIAN HISTORY PART I, Chapter: Kinship, Caste and Class, p.75

3. The Brahmaputra System: Braided Channels and Chars (intermediate)

The Brahmaputra river undergoes a dramatic transformation as it enters India. While it is a relatively quiet river in the cold, dry plateau of Tibet, it enters a region of high rainfall in Northeast India, picking up a massive volume of water and a 'considerable amount of silt' Contemporary India-I, Geography, Class IX, p.21. As the river enters the 750 km long Assam Valley, its gradient (slope) decreases, but its sediment load remains enormous. Because the river carries more silt than its velocity can transport, the sediment settles on the riverbed, forcing the water to split and flow around these deposits. This creates a braided channel—a complex network of multiple, shifting channels that weave in and out of each other like a braid of hair.

Within this braided network, the sandy shoals or temporary flood-plain islands are locally known as Chars. These chars are unique physiographic features of the Assam Valley; they are often fertile but highly unstable, frequently being submerged or eroded during the monsoon. Amidst this instability lies Majuli, recognized as the world's largest riverine island Physical Geography by PMF IAS, Fluvial Landforms, p.199. It is a massive landmass bounded by the Lakhimpur district to the north and Jorhat to the south, though it faces constant threats from the river's 'shifting regime' and 'sandy shoals' Geography of India, Majid Husain, p.17.

This heavy siltation has a significant consequence: it causes the riverbed to rise. Unlike most North Indian rivers that might deepen their channels, the Brahmaputra’s bed is constantly elevating due to the 'huge deposits of silt' Contemporary India-I, Geography, Class IX, p.21. Consequently, during the rainy season, the river cannot contain its volume and overflows, leading to widespread flooding. The river can oscillate from one bank to another over a width of 10 km, making the geography of the Assam Valley one of the most dynamic and volatile in India.

Sources: Contemporary India-I, Geography, Class IX, Chapter 3: Drainage, p.21; Geography of India, Majid Husain, Chapter 3: The Drainage System of India, p.17; Physical Geography by PMF IAS, Fluvial Landforms and Cycle of Erosion, p.199

4. The Peninsular Plateau: Karnataka's Malnad and Maidan (intermediate)

The Karnataka Plateau, a vital component of the South Deccan, is a land of fascinating geological and topographical contrasts. Composed primarily of ancient Archaean and Dharwar formations, this plateau stands at an average elevation of 600–900 meters Geography of India (Majid Husain), Physiography, p.57. It is fundamentally divided into two distinct physiographic regions based on their relief: the rugged, forested Malnad to the west and the undulating, rolling plains of the Maidan to the east.

The Malnad (literally 'hilly country') is a deeply dissected upland bordering the Western Ghats. It is characterized by steep hills, dense forests, and high-energy streams. This region is home to some of the plateau's highest points, including Mulangiri (1913 m) in the Baba-Budan Hills and Kudremukh (1892 m) Geography of India (Majid Husain), Physiography, p.57. Due to its rugged terrain, settlements here tend to be semi-compact or dispersed, nestled within the valleys Geography of India (Majid Husain), Settlements, p.11. It is the heartland of India's coffee plantations and receives heavy monsoonal rainfall.

In sharp contrast, the Maidan represents the eastern portion of the plateau. It consists of vast, rolling plains or low-lying plateaus drained by major rivers like the Kaveri and the Tungabhadra Geography of India (Majid Husain), Physiography, p.58. The Maidan is further divided into the 'Northern Maidan' (known for its black soil and trap landscape) and the 'Southern Maidan' (composed of ancient granitic tors). Unlike the hilly Malnad, the Maidan supports widely spaced compact settlements, as the flatter terrain allows for more organized village structures and extensive agriculture Geography of India (Majid Husain), Settlements, p.11.

Feature	Malnad	Maidan
Literal Meaning	Land of Hills	Land of Plains
Topography	Rugged, dissected, and mountainous	Undulating, rolling plains
Location	Western part (near Western Ghats)	Eastern part of the plateau
Settlement Type	Semi-compact to dispersed	Widely spaced compact settlements

Sources: Geography of India (Majid Husain), Physiography, p.57-58; Geography of India (Majid Husain), Settlements, p.11

5. The Terai Belt: Ecosystem and Agricultural Reclamation (intermediate)

Moving south from the boulder-strewn Bhabar, we encounter the Terai belt, a zone that stands in stark contrast to its northern neighbor. While the Bhabar is dry on the surface due to its porous nature, the Terai is a marshy, damp, and thickly forested region. This physical shift occurs because the streams and rivers that "disappeared" underground in the Bhabar's pebbles finally re-emerge at the surface here, creating a perennially wet environment CONTEMPORARY INDIA-I, Chapter 2: Physical Features of India, p. 11.

Historically, the Terai was a region of dense jungle and rich biodiversity, serving as a natural buffer between the mountains and the plains. However, the 20th century saw a massive transformation of this landscape. Following the partition of India in 1947, vast tracts of these forests were cleared to provide land for settlers and to boost national food security. This process, known as agricultural reclamation, turned a formerly malarial swamp into one of India’s most productive agricultural zones Geography of India, Chapter 2: Physiography, p. 35.

Feature	Bhabar (North)	Terai (South)
Soil/Surface	Porous pebbles and boulders	Fine silt and clay (Alluvium)
Hydrology	Streams disappear underground	Streams re-emerge; marshy
Vegetation	Scant, deep-rooted trees	Dense forests (originally)

Today, the Terai is a powerhouse of intensive agriculture, particularly in states like Uttar Pradesh, Uttarakhand, and Bihar. The combination of high water tables and fertile alluvial soil makes it ideal for water-intensive crops. With the help of canal and tube-well irrigation, farmers in this belt have achieved high yields in sugarcane, rice, and wheat Geography of India, Chapter 9: Agriculture, p. 51. This transition from a wild ecosystem to a "granary" highlights the dynamic relationship between physical geography and human economic needs.

Sources: CONTEMPORARY INDIA-I, Chapter 2: Physical Features of India, p.11; Geography of India, Chapter 2: Physiography, p.35; Geography of India, Chapter 9: Agriculture, p.51

6. Regional Terminology of Indian Landforms (exam-level)

In a country as geographically diverse as India, local communities have developed specific vocabularies to describe the unique physical features of their surroundings. Understanding these regional terms is essential for UPSC because they often appear in questions regarding agriculture, ecology, and climate. For instance, the Northern Plains are categorized into four distinct belts based on relief: the Bhabar (pebble-studded stream sinks), the Terai (marshy, damp areas), the Bhangar (older alluvium), and the Khadar (newer alluvium). The Terai, specifically in states like Uttar Pradesh and Uttarakhand, was once a thick forest zone but has been extensively reclaimed for agriculture following partition CONTEMPORARY INDIA-I, Class IX, Chapter 2, p.11. Moving eastward and southward, the terminology shifts to reflect different hydrological and topographical conditions. In the Brahmaputra Valley of Assam, the river’s braided nature creates numerous riverine islands and sandbars locally known as Chars. In the Peninsular Plateau, particularly in Karnataka, the landscape is divided into the Malnad (hilly, dissected upland) and the Maidan (the relatively level, rolling plains to the east). Even soil degradation has its own vocabulary; saline and alkaline soils, which plague parts of the green revolution belt, are locally called Reh, Kallar, or Usar in states like Punjab and Uttar Pradesh Geography of India, Majid Husain, Chapter 4, p.13.

Term	Geographic Description	Primary Region
Doab	Land between two converging rivers (e.g., Bari Doab)	Punjab / Ganga Valley
Char	Riverine islands/sandbars in braided channels	Assam (Brahmaputra)
Maidan	Rolling, open plains of the plateau	Southern Karnataka
Terai	Wet, swampy, and marshy lowland belt	Foothills of Himalayas

Sources: CONTEMPORARY INDIA-I, Geography, Class IX, Chapter 2: Physical Features of India, p.11; Geography of India, Majid Husain, Chapter 4: Soils, p.13; INDIA PHYSICAL ENVIRONMENT, Geography Class XI, Chapter 2: Structure and Physiography, p.12

7. Solving the Original PYQ (exam-level)

This question is a perfect synthesis of regional physiography and local terminology, bridging the gap between general physical geography and state-specific landforms. As you have learned, the Indian landscape is not just categorized by broad divisions like 'Plains' or 'Plateaus,' but by specific regional names that reflect their geological origin. For instance, the concept of a Doab (land between two rivers) is foundational to the Indo-Gangetic plain, while the Terai represents the transition from the Himalayan foothills to the plains. By connecting these building blocks, you can see that UPSC is testing your ability to ground theoretical concepts into the actual map of India.

To solve this, start with the most distinct regional term: Char. As explained in CONTEMPORARY INDIA-I, Geography, Class IX (NCERT 2025), these are riverine islands specific to the braided channels of the Brahmaputra in Assam (B-1). Next, look at Doab; while the Ganga-Yamuna Doab is famous, the term is etymologically synonymous with Punjab—the land of five rivers (A-3). Maidan refers to the rolling plateau surface of Karnataka, a term often contrasted with the hilly 'Malnad' region in southern geography. Finally, the Terai is the marshy, fertile belt heavily reclaimed for agriculture in Uttar Pradesh (D-4). Following this logic, the sequence 3-1-2-4 leads us directly to the correct answer, (B).

Common traps in this question involve the misinterpretation of 'Maidan.' Many candidates reflexively associate the word 'Maidan' (meaning 'plain' in Hindi) with North India, leading them to choose Option (C) or (D) which pair it with Uttar Pradesh or Punjab. However, in a technical geographical context, as noted in Geography of India, Majid Husain, 'Maidan' specifically identifies the South Karnataka Plateau. Another trap is the overlap of the Terai and Doab regions; both exist in Uttar Pradesh, but because 'Doab' is the defining characteristic of the Punjab region's structure, and 'Char' is unique to Assam, the other pairs must fall into place accordingly. Elimination is your strongest tool here—once you lock in B-1 and A-3, the complexity of the list dissolves.