20 questionswith explanationsfor RAS, Patwari, VDO and other Rajasthan exams
The Indus river originates in Tibet near:
Answer: (2) Lake Mansarovar in the Kailash range
Explanation
The Indus rises from the Bokhar Chu glacier near Lake Mansarovar in the Kailash range of Tibet.
Match the regions with the names by which the Brahmaputra is known there: A. Tibet B. Arunachal Pradesh C. Bangladesh 1. Jamuna 2. Tsangpo 3. Dihang
Answer: (4) A-2, B-3, C-1
Explanation
The Brahmaputra is called Tsangpo in Tibet, Siang/Dihang in Arunachal Pradesh and Jamuna in Bangladesh.
The Bhagirathi and the Alaknanda meet to form the Ganga at:
Answer: (1) Devprayag
Explanation
The Bhagirathi and the Alaknanda join at Devprayag in Uttarakhand; from here the river is called the Ganga.
Which of the following is a right-bank tributary of the Ganga?
Answer: (3) Son
Explanation
The Son rises on the Amarkantak plateau and joins the Ganga from the south (right bank); the Gomti, Ghaghara and Gandak are left-bank tributaries.
Which river, notorious for frequently shifting its course and causing floods, is known as the 'Sorrow of Bihar'?
Answer: (4) Kosi
Explanation
The Kosi carries huge silt loads and shifts its course often, causing severe floods in north Bihar.
The Tapi (Tapti) river originates at:
Answer: (1) Multai (Madhya Pradesh)
Explanation
The Tapi rises near Multai in Betul district, Madhya Pradesh, and flows west into the Gulf of Khambhat; Mahabaleshwar, Trimbakeshwar and Sihawa are the sources of the Krishna, Godavari and Mahanadi.
The Kaveri river originates at Talakaveri, which lies in the:
Answer: (2) Brahmagiri hills of Kodagu, Karnataka
Explanation
The Kaveri rises at Talakaveri in the Brahmagiri hills of Kodagu (Coorg) district, Karnataka.
Which of the following is NOT a tributary of the Krishna river?
Answer: (3) Indravati
Explanation
The Indravati is a tributary of the Godavari; the Tungabhadra, Bhima and Koyna join the Krishna.
Match the dams/projects with the rivers on which they are built: A. Nagarjuna Sagar B. Mettur C. Sardar Sarovar D. Polavaram 1. Kaveri 2. Godavari 3. Krishna 4. Narmada
Answer: (4) A-3, B-1, C-4, D-2
Explanation
Nagarjuna Sagar is on the Krishna, Mettur on the Kaveri, Sardar Sarovar on the Narmada and Polavaram on the Godavari.
Wular lake, one of the largest freshwater lakes of India, lies on the course of which river?
Answer: (1) Jhelum
Explanation
The Jhelum flows through Wular lake in the Kashmir valley; the Tulbul navigation project is located at the lake's outlet.
Consider the following statements about Loktak lake: 1. It is located in Manipur. 2. Floating masses of vegetation called 'phumdis' are found on it. 3. It is a brackish-water coastal lagoon. Which of the statements given above is/are correct?
Answer: (2) 1 and 2 only
Explanation
Loktak is a freshwater lake in Manipur known for its phumdis, on which Keibul Lamjao National Park lies; it is not a coastal lagoon.
Chilika lake, the largest brackish-water lagoon of India, is located in which state?
Answer: (3) Odisha
Explanation
Chilika lake lies on the Odisha coast near the Mahanadi delta and is India's largest brackish-water lagoon.
The Ken-Betwa link project, the first river-interlinking project taken up under the National Perspective Plan, involves which two states?
Answer: (4) Madhya Pradesh and Uttar Pradesh
Explanation
The Ken-Betwa link transfers Ken water to the Betwa basin through the Daudhan dam and benefits the Bundelkhand region of Madhya Pradesh and Uttar Pradesh.
Under the Indus Waters Treaty of 1960, which rivers were allocated to India for unrestricted use?
Answer: (1) Ravi, Beas and Sutlej
Explanation
The 1960 treaty, signed with World Bank mediation, allocated the eastern rivers (Ravi, Beas, Sutlej) to India for unrestricted use and the western rivers (Indus, Jhelum, Chenab) mainly to Pakistan.
Consider the following statements: 1. The Indus, the Sutlej and the Brahmaputra are antecedent rivers that cut deep gorges across the Himalaya. 2. The peninsular rivers are, in general, younger than the Himalayan rivers. Which of the statements given above is/are correct?
Answer: (1) 1 only
Explanation
These rivers existed before the Himalaya rose and kept cutting gorges as the land was uplifted; peninsular rivers are older and have mature, graded courses.
Arrange the following tributaries of the Indus from north to south: 1. Ravi 2. Jhelum 3. Sutlej 4. Chenab
Answer: (3) 2, 4, 1, 3
Explanation
From north to south the order is Jhelum, Chenab, Ravi, (Beas) and Sutlej.
Consider the following statements: 1. The Mahanadi, Godavari, Krishna and Kaveri form deltas where they meet the Bay of Bengal. 2. The Narmada and Tapi form estuaries rather than deltas. Which of the statements given above is/are correct?
Answer: (3) Both 1 and 2
Explanation
The major east-flowing peninsular rivers build deltas, while the west-flowing Narmada and Tapi enter the Arabian Sea through estuaries.
Majuli, one of the largest inhabited river islands in the world, lies in which river?
Answer: (4) Brahmaputra
Explanation
Majuli is a river island in the Brahmaputra in Assam and is a district of the state.
The Narmada, the Son and the Johila rise from the Amarkantak plateau and flow out in different directions. This is an example of which drainage pattern?
Answer: (2) Radial
Explanation
When rivers flow outward in all directions from a central upland, the pattern is radial, as seen at Amarkantak.
Sriharikota island, home of the Satish Dhawan Space Centre, separates which lagoon from the Bay of Bengal?
Answer: (2) Pulicat
Explanation
Pulicat lake, on the Andhra Pradesh-Tamil Nadu border, is separated from the Bay of Bengal by the barrier island of Sriharikota.