Brahmaputra Drainage System

Total Questions: 13

1. Given below are two statements, one is labelled as Assertion (A) and other as Reason (R) : [U.P.P.C.S. (Pre) 2021]

Assertion (A): Teesta river was earlier a tributary of Ganga now it is a tributary of Brahmaputra.

Reason (R): River capturing is a major feature of Himalayan rivers.

Select the correct answer using the codes given below.
Codes:

(a) Both (A) and (R) are true and (R) is correct explanation of (A).
(b) Both (A) and (R) are true, but (R) is not correct explanation of (A).
(c) (A) is true, but (R) is false.
(d) (A) is false, but (R) is true.

Correct Answer: (a) Both (A) and (R) are true and (R) is correct explanation of (A).

Solution:Historically, the Teesta river was a tributary of the Ganga and now it is a tributary of Brahmaputra. River capture is a natural process which is more active in the youthful stage of the valley development because the streams are actively engaged in head-ward erosion and valley lengthening but river capture also occurs during mature and senile stages of the valley development through the process of lateral erosion and meander intersection.

2. Which of the following rivers have almost the same point of the beginning? [U.P.P.C.S. (Pre) 2006]

(a) Brahmaputra and Ganga
(b) Tapi and Beas
(c) Brahmaputra and Indus
(d) Indus and Ganga

Correct Answer: (c) Brahmaputra and Indus

Solution:The Tibetan Plateau is also known in China as the Qinghai Tibat Plateau or the Qing zang. With an average elevation exceeding 4,500 meters, the Tibetan Plateau is also called "the Roof of the World". The rivers originating are the Yangtze, Huang He (Yellow River), Mekong, Indus, satlej (Sutlej), Brahmaputra, and Salween. Hence, it is clear that Brahmaputra and Indus originate from the Tibetan Plateau.

3. With reference to river Teesta, consider the following statements: [U.P.S.C.(Pre) 2017]

1. The source of river Teesta is the same as that of Brahmaputra but it flows through Sikkim.
2. River Rangeet originates in Sikkim and it is a tributary of river Teesta.
3. River Teesta flows into Bay of Bengal on the border of India and Bangladesh.
Which of the statements given above is/are correct?

(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3

Correct Answer: (b) 2 only

Solution:Teesta River originates from the Khangchung Chho glacial lake in Sikkim as Chhonbo Chhu river at an altitudes of approx. 5280 meters. The source of the Brahmaputra River is the Angsi Glaciar in Tibet. Thus statements (1) is wrong.

River Rangeet originates in Sikkim and it is a tributary of river Teesta. Thus Statements (2) is correct. Teesta river is a Tributary of Brahmaputra. Teesta River flows through Sikkim and West Bengal in India. It Joins Brahmaputra in Bangladesh and Falls into the Bay of Bengal. Thus statements (3) is wrong. Hence option (b) is correct answer.

4. Which of the following is/are tributary/tributaries of Brahmaputra? [U.P.S.C.(Pre) 2016]

1. Dibang

2. Kameng

3. Lohit

Select the correct answer using the code given below :

(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

Correct Answer: (d) 1, 2 and 3

Solution:The tributaries of Brahmaputra river are Kameng, Sankosh, Jiabharali, Manas,, Dibang, Lohit, and Burhi dihing rivers. Thus all the given tributaries are correct. Dibang river flows across Dibang Valley district and Lower Dibang Valley district of Arunachal Pradesh, Kameng river flows in Arunachal Pradesh and Assam while the Lohit river originates in eastern Tibet and flows through Arunachal Pradesh and Assam.

5. Which of the following Manganese producing area is not located in Karnataka? [U.P. R.O./A.R.O. (Pre) 2023]

(a) Shimoga
(b) Bellary
(c) Srikakulam
(d) Chikmagalur

Correct Answer: (c) Srikakulam

Solution:Shimoga, Ballari and Chikkamagaluru are Manganese producing areas of Karnataka, while Srikakulam is a district in Andhra Pradesh, which is mainly known for the production of quartz, feldspar and other ferro-magnesium minerals. According to the Minerals Year Book 2021, the three Largest manganese producing states in Year 2020-21 are Madhya Pradesh (34%), Maharashtra (24%) and Odisha (18%) respectively.

6. Majuli, is the largest inhabited riverine island in the World is formed by: [Chhattisgarh P.C.S.(Pre) 2023]

(a) Ganga river
(b) Narmada river
(c) Brahmaputra river
(d) None of these

Correct Answer: (c) Brahmaputra river

Solution:The catchment area of river Brahmaputra is Tibet (China) Bangladesh, India and Bhutan. The Brahmaputra River System is a vital component of the Himalayan Drainage System, one of the three major river basins in the region. The Brahmaputra River, along with its numerous tributaries, flows through the northeastern part of the Indian subcontinent, significantly shaping the landscape and supporting diverse ecosystems along its course. Stretching over 2,900 kilometres, the Brahmaputra is one of the longest rivers in Asia and plays a crucial role in the hydrology and agriculture of the areas it traverses. The river, known as the Yarlung Tsangpo in southern Tibet, flows through dramatic gorges in the Himalayas and enters Arunachal Pradesh, where it is called the Dihang. Just west of Sadiya, the Dihang veers southwest and is joined by the Lohit and Dibang rivers. After their confluence, the river takes on the name Brahmaputra. It continues through Bangladesh as the Jamuna, eventually merging with the Ganga to create the expansive Sundarbans delta.

7. The catchment area of river Brahmaputra is - [U.P.P.C.S. (Pre) 1990]

(a) Tibet, Bangladesh, India
(b) India, China, Bangladesh, Tibet
(c) India, Pakistan, Bangladesh, Sikkim
(d) Bangladesh, West Bengal, Bhutan, Nepal.

Correct Answer: (a) Tibet, Bangladesh, India

Solution:The catchment area of river Brahmaputra is Tibet (China) Bangladesh, India and Bhutan. The river, known as the Yarlung Tsangpo in southern Tibet, flows through dramatic gorges in the Himalayas and enters Arunachal Pradesh, where it is called the Dihang. Just west of Sadiya, the Dihang veers southwest and is joined by the Lohit and Dibang rivers. After their confluence, the river takes on the name Brahmaputra. It continues through Bangladesh as the Jamuna, eventually merging with the Ganga to create the expansive Sundarbans delta.

8. The Brahmaputra, Irrawaddy and Mekong Rivers originate in Tibet narrow and flow in parallel mountain ranges in their upper reaches. Of these rivers, Brahmaputra makes a "U" turn in its course to flow into India. This "U" turn is due to ? [U.P.S.C.(Pre) 2011]

(a) Uplift of folded Himalayan ranges.
(b) Syntaxial bending of geologically young Himalayas.
(c) Geo-tectonic disturbance in the tertiary folded mountain chains.
(d) Both (a) and (b) above.

Correct Answer: (b) Syntaxial bending of geologically young Himalayas.

Solution:The Himalayan mountain on their western and eastern extremities are sharply bend southward in deep knee-bend flexures that are called syntaxial bends. Almost hairpin bend occurs on the eastern limit of Arunachal Pradesh, where the mountain changes sharply from the easterly to southerly trend.

9. In India, 'Yarlung Zangbo River' is known as [B.P.S.C. 56th to 59th (Pre) 2015]

(a) Ganga
(b) Indus
(c) Brahmaputra
(d) Mahanadi

Correct Answer: (c) Brahmaputra

Solution:Yarlung Zangbo is known as Brahmaputra river in India. It originates at Angsi glacier in western Tibet.

10. Near Mansarover lake in Tibet, there is the source of the river- [39th B.P.S.C.(Pre)1994]

(a) Brahmaputra
(b) Satluj
(c) Indus
(d) All of the above

Correct Answer: (d) All of the above

Solution:The source of river Brahmaputra, Indus, and Sutlej (Satluj), is near Mansarovar Lake in Tibet.

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