Rivers Quiz

Notes:
Statements 1, 2, and 3 are correct: Ghiyasuddin started canal works, and Firuz Shah expanded them significantly, introducing the Haqq-i-Sharb irrigation tax on produce. Firuz Shah also repaired the Hauz Khas and Shamsi tanks. Statement 4 is incorrect since the construction of a massive dam at Tughlaqabad is not historically credited to the Tughluqs as a major water-management measure.

Notes:
The correct answer is [B] Gomati – Ghaghara – Gandak – Kosi. The Ganga river receives several major Himalayan tributaries on its left bank as it flows through the Indo-Gangetic plains toward the east.

• Gomati (1st from West): Originating from Gomat Taal in Pilibhit, Uttar Pradesh, it joins the Ganga near Varanasi, which is downstream of Prayagraj.
• Ghaghara (2nd from West): A major left-bank tributary that originates in the glaciers of Mapchachungo. It joins the Ganga at Chhapra, Bihar, located further east of the Gomati confluence.
• Gandak (3rd from West): Formed by the Union of Kaligandaki and Trishuli in Nepal, it enters the Indian plains in Champaran and joins the Ganga at Sonpur, near Patna.
• Kosi (4th from West): Known as the “Sorrow of Bihar,” this antecedent river joins the Ganga at Kursela in the Katihar district, which is the easternmost among the four options provided.

The general West-to-East sequence of major left-bank tributaries is: Ramganga (upstream of Prayagraj), followed by Gomati, Ghaghara, Gandak, Bagmati, and Kosi.

Notes:
The correct answer is [C] Both 1 and 2.The Red Sea is a unique marine ecosystem characterized by its isolation and extreme environmental conditions.

• Statement 1 (Correct): The Red Sea is situated in an arid to semi-arid region between the deserts of North Africa and the Arabian Peninsula. It receives very little precipitation, with average rainfall being extremely low (often less than 100 mm per year), mostly occurring in the form of short, intense thunderstorms. Evaporation rates in the region are significantly higher than the rate of precipitation.
• Statement 2 (Correct): There are no permanent rivers or streams that flow into the Red Sea. While there are “wadis” (seasonal dry riverbeds) that may carry flash flood water into the sea during rare rain events, there is no continuous influx of freshwater from any major river system.

Key Implications:
Because there is high evaporation and virtually no freshwater inflow from rain or rivers, the Red Sea has some of the highest salinity levels of any body of water connected to the open ocean. It relies almost entirely on the exchange of water with the Indian Ocean through the narrow Strait of Bab-el-Mandeb to maintain its water level.

Notes:
The correct answer is [C] Pennar.The Gandikota canyon, often referred to as the “Grand Canyon of India,” is a stunning natural gorge located in the Kadapa district of Andhra Pradesh. It was formed by the erosion caused by the Pennar River cutting through the Erramala hills (also known as the Gandikota hills) over centuries.

• Pennar River (Statement C – Correct): Originating in the Nandi Hills of Karnataka, the Pennar flows through Andhra Pradesh before emptying into the Bay of Bengal. At Gandikota, the river has carved a deep notch through the massive massive sandstone layers, creating the distinctive canyon walls.
• Cauvery (Statement A – Incorrect): The Cauvery flows further south through Karnataka and Tamil Nadu. While it creates famous features like the Hogenakkal Falls and the Shivanasamudra Falls, it is not associated with the Gandikota canyon.
• Manjira (Statement B – Incorrect): A major tributary of the Godavari River, the Manjira flows primarily through Maharashtra, Karnataka, and Telangana. It is the main source of drinking water for Hyderabad.
• Tungabhadra (Statement D – Incorrect): Formed by the confluence of the Tunga and Bhadra rivers, it is a chief tributary of the Krishna River. It flows through Karnataka and Telangana/Andhra Pradesh and is famous for its association with the ruins of the Vijayanagara Empire at Hampi.

Notes:
The correct answer is [D] Sutlej. This question refers to the specific geographical convergence of the “Panjnad” (five rivers) before they meet the Indus River in Pakistan.

• The Convergence Process: The Jhelum and Ravi rivers both flow into the Chenab. The Chenab then carries their combined waters and eventually meets the Sutlej at Panjnad, near Mithankot.
• Sutlej (Statement D – Correct): After receiving the combined flow of the other four rivers (Jhelum, Chenab, Ravi, and Beas), the Sutlej is the final collective stream that joins the Indus River directly.
• Chenab (Statement A – Incorrect): While the Chenab is the largest tributary of the Indus in terms of volume and receives the Jhelum and Ravi, it merges into the Sutlej at Panjnad before the final confluence with the Indus.
• Jhelum and Ravi (Statements B & C – Incorrect): These are secondary tributaries in this context. The Jhelum joins the Chenab at Trimmu, and the Ravi joins the Chenab further downstream. Neither reaches the Indus independently.

The Indus River system is governed by the Indus Waters Treaty (1960), which allocates the waters of the “Eastern Rivers” (Sutlej, Beas, Ravi) to India and the “Western Rivers” (Indus, Jhelum, Chenab) to Pakistan, subject to specific usage rights.

Notes:
The correct answer is [B] 2 and 4. This question tests the specific geographical origins of peninsular rivers in India, distinguishing between those rising in the Chota Nagpur Plateau and those in the Eastern Ghats.

• Nagavali (Statement 2 – Correct): Also known as the Langulya, this river rises in the Eastern Ghats near Lakhbahal in the Kalahandi district of Odisha. it flows through Odisha and Andhra Pradesh before draining into the Bay of Bengal.
• Vamsadhara (Statement 4 – Correct): This river originates in the Eastern Ghats in the Kalahandi district of Odisha. It is an important east-flowing river that runs between the Rushikulya and Godavari basins.
• Brahmani (Statement 1 – Incorrect): The Brahmani is formed by the confluence of the South Koel and Sankh rivers near Rourkela. These headwaters originate in the Chota Nagpur Plateau (Jharkhand), not the Eastern Ghats.
• Subarnarekha (Statement 3 – Incorrect): This river rises in the Chota Nagpur Plateau near Ranchi in Jharkhand. It flows through Jharkhand, West Bengal, and Odisha before reaching the Bay of Bengal.

The Eastern Ghats are a discontinuous range of mountains along India’s eastern coast. While major rivers like the Godavari and Krishna cut through them, smaller rivers like the Nagavali, Vamsadhara, and Rushikulya actually originate within these hill ranges.

Notes:
The correct answer is [B] 2 only. Statement 1 (Incorrect):
The amount of water in rivers and lakes is far less than the amount of
groundwater. Groundwater accounts for approximately 30.1% of Earth’s
freshwater, whereas all surface freshwater (lakes, rivers, and swamps combined)
makes up only about 1.2%. In particular, rivers contain an extremely
small fraction—about 0.0002% of total water. Statement 2 (Correct):
The amount of water in polar ice caps and glaciers is greater than that
in groundwater. Glaciers and ice caps hold the largest share of Earth’s
freshwater, roughly 68.7%, compared to 30.1% in groundwater.

Source	Percentage of Freshwater
Glaciers and Ice Caps	~68.7%
Groundwater	~30.1%
Surface Water & Other	~1.2%
└─ Lakes	~0.26%
└─ Rivers	~0.006%

Since about 97% of Earth’s total water is saline
(in oceans), these figures refer only to the remaining 3% that is
freshwater. Within this freshwater, the order from largest to smallest
storage is:

Ice caps/Glaciers > Groundwater > Lakes >
Soil Moisture > Atmosphere > Rivers.

Notes:
The pairs 1, 2, and 3 are correctly matched: Kabini forms the boundary of Nagarhole; Bhadra flows through Bhadra Wildlife Sanctuary; Kali bisects Anshi (now Kali Tiger Reserve). The fourth pair is incorrect as the Cauvery River flows through Cauvery Wildlife Sanctuary, not Brahmagiri Wildlife Sanctuary, which is the origin of the Laxman Tirtha tributary.

Notes:
Karnataka’s water wealth shows significant geographical disparities. The West-flowing rivers, including Sharavathi, Kali, and Netravati, though occupying only about 13.68% of the land area, contribute nearly 58.3% of the state’s surface water. This concentration of water resources in a small part of the state explains the pronounced disparities in water distribution across Karnataka.

Notes:
The west-flowing rivers in Karnataka from north to south follow this sequence: Kali originates near Bidi village and flows into the Arabian Sea near Karwar (northernmost). Bedti (Gangavali) starts south of Dharwad, south of Kali. Sharavathi, known for Jog Falls, originates at Ambuthirtha and flows south of Bedti. Udyavara is a smaller river flowing through Udupi district, south of Sharavathi. Netravati originates in the Western Ghats, flowing through Dakshina Kannada, and meets the Arabian Sea near Mangaluru (southernmost). Hence, correct north to south order is Kali, Bedti, Sharavathi, Udyavara, Netravati.