Answer: Option B. -> Nagarjuna - Cauvery Sagar
Answer: (b)

Answer: Option A. -> Brahmaputra
Answer: (a)
Guwahati — formerly known as Pragjyotishpura and Durjoya in ancient Assam, and Gauhati in the modern era — is an ancient urban area, the largest city of Assam, the largest metropolitan area in northeastern, one of the fastest developing cities in India and often referred to as "gateway" of the North East Region.
It is also the third-largest city in Eastern India after Kolkata and Patna respectively. The city is between the southern bank of the Brahmaputra river and the foothills of the Shillong plateau.

Answer: Option C. -> Sikkim
Answer: (c)The ‘Gurudongmar Lake’ named after Guru Padmasambhava is one of the highest lakes in the world. It is situated in the Indian state of Sikkim.

Answer: Option D. -> Indus
Answer: (d)Srinagar is situated in the Kashmir Valley and lies on the banks of the Jhelum River, a tributary of the Indus. The city is famous for its gardens, lakes and houseboats.

Answer: Option A. -> 1 2 3 4
Answer: (a)
List-I (Source Region) List-II (River)
(a) Brahmgiri Hills 1. Cauvery
(b) Vering Spring 2. Jhelum
(c) Mahabaleshwar 3. Krishna
(d) Chhota Nagpur Plateau 4. Subarnarekha

Answer: Option C. -> Harike Dam on Satluj river
Answer: (c)

Answer: Option A. -> Koshi River
Answer: (a)Koshi River is known as the "Sorrow of Bihar". It leads to annual floods that affect about 21,000 km2of fertile agricultural lands and impact heavily upon the state’s rural economy. During floods, the average discharge of Koshi increases to 18 times the average, inundating large areas in its spate.

Answer: Option C. -> (a), (b), (c), (d)
Answer: (c)
In the Deccan region, most of the major river systems flowing generally in east direction fall into Bay of Bengal.
The major east flowing rivers are Godavari, Krishna, Cauvery, Mahanadi, etc. Narmada and Tapti are major West flowing rivers.
The Godavari in the southern Peninsula has the second largest river basin covering 10 per cent of the area of India.
Next to it is the Krishna basin in the region, while the Mahanadi has the third largest basin.
The basin of the Narmada in the uplands of the Deccan, flowing to the Arabian Sea, and of the Kaveri in the south, falling into the Bay of Bengal is about the same size, though with different character and shape.

Answer: Option C. -> Pulicat
Answer: (c)

Answer: Option B. -> Godavari
Answer: (b)