Rivers, Mountains & States
The rivers, mountains and states of India form a large and dependable topic in the India General Knowledge section of the ADRE 3.0 Grade IV paper. The questions range from the simple, such as the name of the longest river, to the specific, such as the states through which the Tropic of Cancer passes. Because this topic is built on physical and political geography that does not change, a candidate who studies it once and revises it regularly can answer almost every question. This page brings together the main rivers of India, the great mountain ranges and peaks, the plains and plateaus, and the states and union territories, with the special attention that the north-east and Assam deserve.
Why Rivers, Mountains and States Are Important
This topic tests the candidate's mental map of India. A clear picture of where the rivers rise, where they flow and where they meet the sea makes it easy to answer questions about drainage, agriculture, cities and transport. The mountains decide the climate, the rainfall and even the borders of India, while the states form the political frame within which all these features are arranged. In the examination this topic is combined with Assam's geography, because the Brahmaputra and the Barak and the hill ranges of the north-east connect the state directly with the geography of the whole country.
The Major Rivers of India
India's rivers are divided into the Himalayan rivers, which are perennial because they are fed by snow as well as rain, and the peninsular rivers, which are mostly seasonal because they depend on rainfall. The Ganga is the longest river of India, and it rises in the Gangotri glacier as the Bhagirathi and is joined by the Alaknanda at Devprayag. The Yamuna, the Ghaghara, the Gandak, the Kosi, the Son and the Damodar are important tributaries of the Ganga. The Brahmaputra rises in Tibet as the Yarlung Tsangpo, enters India in Arunachal Pradesh, flows through Assam and joins the Ganga in Bangladesh to form the Sundarbans delta. The Godavari is the longest river of the peninsula and is called the Dakshin Ganga, and the Krishna, the Kaveri and the Mahanadi are the other great peninsular rivers that flow east into the Bay of Bengal.
West-Flowing Rivers and the Narmada-Tapti System
The Narmada and the Tapti are the two most important west-flowing rivers of India, and they flow through rift valleys, which makes their courses nearly straight. The Narmada rises from the Amarkantak plateau, the same region that gives rise to the Son, and it flows between the Vindhya and the Satpura ranges before reaching the Arabian Sea in Gujarat. The Tapti rises near Multai in Madhya Pradesh. Other west-flowing rivers include the Mahi, the Sabarmati and the Luni, and the Luni is a seasonal river of the Thar desert. The distinction between east-flowing and west-flowing rivers is a common question, and the Narmada and the Tapti are the standard examples of west-flowing rivers.
The Mountain Ranges of India
The Himalayas form the northern wall of India and are divided into three ranges: the Greater Himalaya, also called the Himadri, which contains the highest peaks; the Lesser Himalaya, also called the Himachal, which contains the famous hill stations; and the Shiwaliks, the outermost foothills. The Karakoram lies to the north of the Himalayas and contains K2, the second-highest peak in the world. The Kanchenjunga, in Sikkim, is the highest peak located entirely within India. The Aravalli is the oldest fold mountain range in the world, the Vindhya and the Satpura separate north India from the Deccan, and the Western Ghats, also called the Sahyadri, run along the western coast. The Eastern Ghats run along the eastern coast, and the two ranges meet in the Nilgiri hills, where Doddabetta is the highest peak.
Plains, Plateaus and the Coastal Region
The Indo-Gangetic plain is the great fertile plain of north India, formed by the alluvium of the Indus, the Ganga and the Brahmaputra rivers, and it has supported dense population and agriculture for thousands of years. The Deccan plateau occupies the peninsular interior, the Malwa plateau lies in central India, and the Chota Nagpur plateau is rich in minerals. The Thar desert lies in the west, in Rajasthan, and the coastal plains lie along both the western and the eastern coasts. India has a long coastline, and Gujarat has the longest coastline among the states. The Sundarbans, at the mouth of the Ganga and the Brahmaputra, is the largest delta in the world and a mangrove forest of great importance.
The States and Union Territories of India
India is a union of states and is presently organised into twenty-eight states and eight union territories. Rajasthan is the largest state by area and Goa is the smallest. Uttar Pradesh is the largest state by population and Sikkim is the smallest. The Tropic of Cancer passes through eight states, namely Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura and Mizoram. The north-eastern states are often called the Seven Sisters, and they are Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland and Tripura, with Sikkim sometimes called the brother. Assam shares its border with the states of Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura, Meghalaya and West Bengal, and with the countries of Bhutan and Bangladesh.
How This Topic Appears in the Examination
The questions from this topic are mostly one-mark objective questions that can be grouped into a few patterns: the source of a river, the length or the longest river, the states through which a river or the Tropic of Cancer passes, the highest peak of a range, and the capitals or the largest cities of states. Because the answers are stable facts, the topic is a reliable source of marks. Questions about Assam's rivers and hills are also asked, and the Brahmaputra, the Barak and Majuli are the favourite subjects of such questions.
Memory Tips
Learn the rivers in groups, the Himalayan and the peninsular, and within each group the east-flowing and the west-flowing ones. Remember the Narmada and the Tapti as the two great west-flowing rivers, and the Narmada as the one that flows through a rift valley. Remember the Kanchenjunga as the highest peak within India and the K2 as the highest peak of the Karakoram. Remember the Tropic of Cancer passing through eight states, and the Seven Sisters of the north-east. A blank outline map, filled in by hand, is the best tool for fixing the rivers and the states in memory.
Common Mistakes to Avoid
- Confusing the Ganga, the longest river of India, with the Godavari, the longest river of the peninsula.
- Thinking that the Brahmaputra rises in India, when it rises in Tibet.
- Mixing the Aravalli, the oldest fold mountains, with the Himalayas, the highest mountains.
- Confusing the highest peak in India, the Kanchenjunga, with the highest peak in the world, the Everest.
- Forgetting that the Tropic of Cancer passes through eight states and which those states are.
How to Prepare This Topic
- Draw a blank map of India and fill in the main rivers, mountains and states.
- Prepare a table of rivers with their sources and the states they flow through.
- List the states with their capitals and their special features.
- Learn the mountain ranges with their highest peaks and the important passes.
- Revise the map and attempt map-based and fact-based questions every week.
Additional Points to Remember
The Brahmaputra is called the Yarlung Tsangpo in Tibet, the Siang or Dihang in Arunachal Pradesh, and the Jamuna in Bangladesh. The Barak is the other important river of Assam, and it flows through the Barak valley and is joined by the Surma and the Kushiyara in Bangladesh. Majuli, in the Brahmaputra, is the largest river island in the world. The Indus, the Ganga and the Brahmaputra are the three great river systems of India, and the Indus Waters Treaty governs the sharing of the Indus waters. The Western Ghats are a UNESCO World Heritage Site and one of the world's great biodiversity hotspots, which links this topic to the environment.
Advanced Tips
When a question asks about a river, think first about which direction it flows, because that decides which sea it meets and which states it crosses. When a question asks about a mountain, remember whether it belongs to the Himalayan system or the peninsular system. When a question mentions the Tropic of Cancer, remember the eight states and that it passes through the middle of the country. When a question mentions the north-east, remember the Seven Sisters and Assam's neighbours. Keeping a mental map of India, with the rivers running through it and the mountain walls around it, makes even a new question easy to answer.
Related Topics
Rivers, mountains and states are closely related to the other topics of India General Knowledge. They connect with important days, because several days are connected with rivers, mountains and states. They connect with awards and honours, because cultural and literary awards often mention states and regions. They connect strongly with Assam's geography, because the Brahmaputra, the Barak and the hills of the north-east are studied there. They also connect with the environment, because the Himalayan glaciers, the deltas and the mangroves are important ecological features. Studying these topics together gives a complete picture of the geography of India.
Quick Revision Checklist
- The Ganga is the longest river of India and the Godavari is the longest peninsular river.
- The Narmada and the Tapti are the two great west-flowing rivers.
- The Kanchenjunga is the highest peak within India and the K2 is the highest peak of the Karakoram.
- The Aravalli is the oldest fold mountain range and the Himalayas the highest.
- The Tropic of Cancer passes through eight states of India.
- The Brahmaputra is called the Yarlung Tsangpo in Tibet and the Jamuna in Bangladesh.
Frequently Asked Questions
Which is the longest river of India?
The Ganga is the longest river of India, and the Godavari is the longest river of the peninsula, called the Dakshin Ganga.
Which are the two great west-flowing rivers of India?
The Narmada and the Tapti are the two great west-flowing rivers of India, and they flow through rift valleys.
Which is the highest peak located within India?
The Kanchenjunga, in Sikkim, is the highest peak located entirely within India.
Through how many states does the Tropic of Cancer pass?
The Tropic of Cancer passes through eight states: Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura and Mizoram.
What is the Brahmaputra called in different regions?
The Brahmaputra is called the Yarlung Tsangpo in Tibet, the Siang or Dihang in Arunachal Pradesh and the Jamuna in Bangladesh.