Rivers and Lakes of India

Mahi is the correct answer because it is a west-flowing peninsular river that ultimately empties into the Gulf of Khambhat in Gujarat. It rises in the Vindhya region of Madhya Pradesh, passes through Rajasthan and Gujarat, and reaches the Arabian Sea through the gulf. The westward drainage pattern is an important physical-geography feature: unlike most major peninsular rivers, Mahi does not flow toward the Bay of Bengal. Mahanadi, Cauvery, and Pennar are mainly east-flowing rivers that drain toward the Bay of Bengal. Therefore, the geographical direction and the named gulf together identify option A.

The Sabarmati is correct. It rises in the Aravalli region of Rajasthan and flows southwest through Rajasthan and Gujarat before reaching the Gulf of Khambhat. Ahmedabad, one of Gujarat’s major cities, is situated on the banks of the Sabarmati, making the river especially important in Indian geography and general knowledge. Brahmani is an east-flowing river of Odisha and Jharkhand, Wainganga is part of the Godavari river system, and Subarnarekha flows eastward into the Bay of Bengal. Their courses do not match the Aravalli-to-Khambhat description. Hence option A is the only suitable answer.

Pulicat Lake is the correct answer. It is a large brackish lagoon situated along the Andhra Pradesh–Tamil Nadu border and is renowned for Pulicat Lake Bird Sanctuary. The lagoon’s shallow coastal waters and wetland habitats attract many migratory birds, especially during the cooler season. Dal and Wular are important lakes of Jammu and Kashmir, with very different Himalayan settings; Dal is associated with Srinagar, while Wular is a large freshwater lake. Roopkund is a high-altitude glacial lake in Uttarakhand and is not a coastal bird sanctuary. Thus the border location, lagoon character, and migratory-bird clue all point to option A.

Narmada is the correct answer because it flows through a tectonic rift valley between the Vindhya Range to the north and the Satpura Range to the south. It generally flows westward from eastern Madhya Pradesh across central India and enters the Arabian Sea through the Gulf of Khambhat. This distinctive geological setting explains why Narmada is commonly grouped with west-flowing rift-valley rivers. Damodar is associated with the Chota Nagpur Plateau and the eastern drainage system, Teesta is a Himalayan river, and Betwa is a tributary of the Yamuna. Therefore, the range position and rift-valley clue identify option A.

The correct answer is the Gulf of Khambhat. The Tapi, also called the Tapti, rises near Multai in Madhya Pradesh and flows westward through parts of Maharashtra and Gujarat before entering the Arabian Sea through the Gulf of Khambhat. Its course is comparable in direction to that of the Narmada, another major west-flowing peninsular river. The Gulf of Mannar lies between southeastern India and Sri Lanka, the Gulf of Kachchh is farther north on Gujarat’s coast, and the Gulf of Aden is outside India near Yemen and the Horn of Africa. Therefore, option C is geographically precise.

Bhagirathi is the correct answer because it emerges from the Gangotri Glacier region, specifically near Gaumukh, and is traditionally regarded as the principal source stream of the Ganga. At Devprayag, Bhagirathi joins the Alaknanda; from that confluence onward, the combined river is called the Ganga. Alaknanda is also a major Himalayan headstream and carries substantial water, but the Gangotri Glacier clue specifically points to Bhagirathi. Mandakini and Pindar are important Himalayan tributaries within the Alaknanda system, yet neither is identified as the main stream rising from Gangotri. Hence option B is unambiguous.

At Devprayag, the Alaknanda and Bhagirathi meet, and the river downstream of this confluence is known as the Ganga. This is a key fact in the geography of the Himalayan river system and in the traditional sequence of the Panch Prayag confluences. Although both rivers have separate upper courses and tributaries, their meeting at Devprayag gives the combined stream the name Ganga. Yamuna and Tons are associated with the Yamuna system, while Son, Gandak, Ghaghara, and Kosi join the Ganga farther downstream in the plains. Since none of those pairs forms the named Devprayag confluence, option A is the only correct choice.

Ghaghara is the correct answer. It rises in the high Himalayan region of Tibet and Nepal, enters the Indian plains through Nepal, and becomes a major northern tributary of the Ganga. It is one of the substantial and long rivers in the Ganga basin, carrying water from the Himalayan foothills toward the plains. Sabarmati and Mahi are west-flowing rivers associated with western India and the Arabian Sea, while Periyar is a major river of Kerala in southern India. None of these alternatives enters India from the Nepal Himalayas as a major tributary of the Ganga. Therefore, the Himalayan origin and Ganga-basin clues identify option A.

The correct answer is the Damodar. It rises in the Chota Nagpur Plateau region and flows generally eastward through Jharkhand and West Bengal before reaching the lower Ganga deltaic area and ultimately the Bay of Bengal. The river carries considerable sediment and has historically caused floods, although dams and reservoirs built under the Damodar Valley Project have helped regulate its flow and support irrigation, electricity generation and flood control. Narmada flows westward into the Arabian Sea, Luni ends in the arid region of Rajasthan, and Sutlej belongs to the Indus drainage system. Thus only Damodar fits both the source region and the eastward drainage described.

The correct answer is the Godavari. The lower Godavari spreads into a broad delta in Andhra Pradesh, where distributary channels deposit fine, nutrient-rich alluvium. This supports fertile agricultural plains around Kakinada and Rajahmundry, now officially called Rajamahendravaram. The river finally reaches the Bay of Bengal through its delta. The Godavari is one of India’s major east-flowing peninsular rivers and is often called the “Dakshin Ganga.” Tapi and Sabarmati flow westward toward the Arabian Sea and therefore do not form this east-coast delta. Luni belongs to the arid drainage of Rajasthan and does not explain the fertile deltaic landscape around these Andhra Pradesh cities.

The correct answer is A, the Krishna and Godavari delta regions. Kolleru Lake is a large freshwater lake in Andhra Pradesh, situated between the deltas formed by the Krishna River to the south and the Godavari River to the north. This position is a key geographical identifying feature of the lake. The Ganga-Brahmaputra delta is in eastern India near the Bay of Bengal but is not the setting of Kolleru. Narmada and Tapi are west-flowing rivers of central and western India, while Mahi and Sabarmati are associated mainly with Gujarat and do not form the two delta regions around Kolleru.

The correct answer is A, the Beas River. The Beas rises in the Himalayan region of Himachal Pradesh, flows through that state, and then enters Punjab, where it joins the Sutlej near Harike. This confluence makes the Beas an important part of the Indus river system and the Punjab river network. Kosi is a Himalayan tributary associated mainly with Nepal and Bihar, Cauvery flows through southern India, especially Karnataka and Tamil Nadu, and Damodar flows through Jharkhand and West Bengal. The route from Himachal Pradesh to the Sutlej in Punjab therefore identifies the Beas.

The Brahmaputra has different regional names along its long course. In Tibet it is called the Yarlung Tsangpo or Tsangpo. After entering Arunachal Pradesh, its main stream is known as the Siang or Dihang. In the vicinity of Pasighat, the Dihang is joined by the Dibang and Lohit rivers. After this important confluence, the combined river enters Assam and is commonly called the Brahmaputra. Therefore option A, Dihang, is the correct choice. Alaknanda and Son belong to the Ganga river system, while Mandovi is associated mainly with Goa. None of these alternatives follows the name sequence described in the question. Understanding the river’s changing names and the confluence in Arunachal Pradesh makes the answer clear.

The correct answer is A, the Narmada. The Narmada rises near Amarkantak in Madhya Pradesh and flows westward through a rift valley before reaching the Arabian Sea. The Son also rises in the Amarkantak region, but it flows generally eastward and joins the Ganga system. This contrast in direction is the central concept tested by the question. Mahanadi flows eastward to the Bay of Bengal, Pennar is a southern peninsular river that also flows eastward, and Ghaghara is a Himalayan tributary of the Ganga. Therefore, the Amarkantak origin combined with westward flow uniquely identifies the Narmada.

The correct answer is A, the Mahanadi. It is one of the major rivers of Odisha and spreads into distributaries in the coastal plain, forming a broad delta near the Cuttack region before reaching the Bay of Bengal. The river is also strongly associated with the Hirakud Dam in Odisha, making it an important example in Indian geography and water-resource studies. Sutlej belongs to the Indus river system in northwestern India, Luni flows through the arid region of Rajasthan and largely disappears in the Rann area, and Periyar is a major river of Kerala. The Odisha-Cuttack delta clue therefore points clearly to Mahanadi.

The correct answer is A, the Godavari river system. Indravati is an important tributary that joins the Godavari in the eastern Deccan region, while Pranhita is a major combined tributary formed mainly by the Wardha and Wainganga rivers before meeting the Godavari. These tributaries help make the Godavari the largest peninsular river system of India by basin area. Yamuna belongs to the Ganga system, Jhelum belongs to the Indus system, and Sabarmati is an independent west-flowing river of western India. The presence of both Indravati and Pranhita is therefore a distinctive clue for identifying Godavari.

The correct answer is Luni. It is the principal river of the arid region of Rajasthan and is notable for its seasonal character. The river rises near the Pushkar valley in the Aravalli region and flows southwestward through a largely dry landscape. Because rainfall is limited and highly seasonal, its flow and channel conditions vary considerably; its lower course eventually loses itself in the marshy and saline Rann of Kachchh rather than reaching the sea as a normal perennial river. Brahmaputra, Ghaghara, and Krishna are much larger perennial or substantially perennial river systems associated with the Himalayan or peninsular drainage networks, not the Rajasthan desert.

The correct answer is Mandovi. Dudhsagar Falls is a major waterfall in Goa, located in the Western Ghats along the Mandovi River system. The falls are especially impressive during the monsoon, when heavy rainfall increases discharge over the steep rocky escarpment. This connection is useful in Indian geography: Goa, the Western Ghats, monsoon-fed waterfalls, and the Mandovi basin form a coherent regional association. Son is a tributary of the Ganga in central and eastern India, Gandak is a Himalayan tributary of the Ganga, and Betwa is a peninsular tributary of the Yamuna. None of these rivers is the standard geographical association for Dudhsagar Falls.

The correct answer is Teesta. The Teesta rises in the eastern Himalayas, drains Sikkim and North Bengal, and continues into Bangladesh, where it joins the Brahmaputra system. Its steep mountain course, tributary valleys, and strong monsoon variation are important features of Himalayan drainage. The river is therefore a useful geographical link between Sikkim, North Bengal, and the Brahmaputra basin. Pennar is a peninsular river flowing through parts of southern India toward the Bay of Bengal, Sabarmati flows through Rajasthan and Gujarat toward the Gulf of Khambhat, and Periyar is a west-flowing river of Kerala. These alternatives do not fit the Himalayan and Brahmaputra clues.

The governing concept is the source and seasonal reliability of Himalayan river systems. High Himalayan glaciers and seasonal snowfall provide meltwater, while rainfall also feeds the rivers and their tributaries. Because these sources operate across different seasons, major rivers such as the Ganga, Yamuna, and Brahmaputra generally maintain flow for much of the year; hence option A is correct. The Himalaya does not stop all rivers, because many rivers originate there and pass through valleys. Its streams are not merely sandy, and the range contains abundant snow, ice, springs, and rainfall rather than having no water sources.

The governing concept is drainage direction determined by relief or slope. Much of the Deccan Plateau has a general eastward inclination, so its major east-flowing rivers move across the plateau toward the Bay of Bengal. Godavari, Krishna, and Cauvery are prominent examples and form broad drainage systems before entering the bay, often through deltas or estuaries. Therefore option A correctly connects the eastward slope with the observed river pattern. The statement does not mean every peninsular river flows east: Narmada and Tapi are important west-flowing exceptions. Still, options B, C, and D are plainly incorrect because rivers do not generally flow toward the Himalayas, all terminate in lakes, or enter the Aravalli range.

The governing concept is a watershed, or a highland that separates the drainage basins of different rivers. Amarkantak, in the Maikal region of central India, is an important source area. The Narmada rises near Amarkantak and flows westward, while the Son begins in the nearby highlands and ultimately joins the Ganga system toward the east. Because water from the surrounding elevated land drains into different river systems, the area is described as a watershed region. Therefore, option A is correct. A Ganga delta is a depositional coastal landform, Luni is associated with Rajasthan’s inland drainage, and marine coral has no connection with this river-source relationship.