- What is the longest river in Mongolia? A) Onon River B) Selenge River C) Orkhon River D) Kherlen River Answer: B) Selenge River
- Which river is known for flowing into Lake Baikal? A) Onon River B) Orkhon River C) Selenge River D) Kherlen River Answer: C) Selenge River
- The Orkhon River is a tributary of which larger river? A) Selenge River B) Kherlen River C) Onon River D) Amur River Answer: A) Selenge River
- Which river forms part of the eastern border of Mongolia? A) Onon River B) Kherlen River C) Selenge River D) Orkhon River Answer: B) Kherlen River
- The Onon River is primarily located in which region of Mongolia? A) Western Mongolia B) Central Mongolia C) Eastern Mongolia D) Northern Mongolia Answer: C) Eastern Mongolia
- Which river is known for its historical significance during the Mongol Empire? A) Kherlen River B) Onon River C) Selenge River D) Orkhon River Answer: B) Onon River
- The Kherlen River is an important water source for which purpose? A) Hydroelectric power B) Agriculture C) Transportation D) Fishing Answer: B) Agriculture
- Which river is famous for its picturesque valley and cultural significance? A) Onon River B) Orkhon River C) Kherlen River D) Selenge River Answer: B) Orkhon River
- The Kherlen River flows into which body of water? A) Lake Baikal B) Lake Uvs C) The Pacific Ocean D) The Arctic Ocean Answer: B) Lake Uvs
- Which river’s basin is known for its diverse wildlife? A) Selenge River B) Onon River C) Orkhon River D) Kherlen River Answer: A) Selenge River
- Which river is the primary water source for Ulaanbaatar, the capital of Mongolia? A) Selenge River B) Orkhon River C) Kherlen River D) Onon River Answer: C) Kherlen River
- The Onon River is formed by the confluence of which two rivers? A) Kherlen and Orkhon B) Selenge and Orkhon C) Onon and Kerulen D) Onon and Kherlen Answer: D) Onon and Kherlen
- Which river is known for its scenic beauty and is popular for fishing? A) Orkhon River B) Kherlen River C) Selenge River D) Onon River Answer: A) Orkhon River
- What is the primary direction of flow for the Selenge River? A) South to North B) North to South C) East to West D) West to East Answer: A) South to North
- Which river runs through the UNESCO World Heritage site, Orkhon Valley? A) Onon River B) Kherlen River C) Selenge River D) Orkhon River Answer: D) Orkhon River
- What is the main tributary of the Kherlen River? A) Selenge River B) Orkhon River C) Onon River D) None Answer: D) None
- Which river is often referred to as the “mother river” of Mongolia? A) Onon River B) Kherlen River C) Selenge River D) Orkhon River Answer: A) Onon River
- The Selenge River flows into which lake? A) Lake Khovsgol B) Lake Uvs C) Lake Baikal D) Lake Hovsgol Answer: C) Lake Baikal
- Which river is known for its significance in Mongolian folklore? A) Orkhon River B) Kherlen River C) Onon River D) Selenge River Answer: C) Onon River
- The Kherlen River originates in which mountain range? A) Altai Mountains B) Khangai Mountains C) Khentii Mountains D) Hentii Mountains Answer: C) Khentii Mountains
- Which river is associated with the ancient capital of the Mongol Empire, Karakorum? A) Selenge River B) Onon River C) Kherlen River D) Orkhon River Answer: D) Orkhon River
- What is the average length of the Orkhon River? A) 600 km B) 1,124 km C) 800 km D) 1,200 km Answer: B) 1,124 km
- The Kherlen River is mainly used for which type of transportation? A) Cargo B) Passenger C) Recreational D) None Answer: D) None
- Which river has the largest drainage basin in Mongolia? A) Kherlen River B) Onon River C) Selenge River D) Orkhon River Answer: C) Selenge River
- The Onon River is known for its rich deposits of which mineral? A) Gold B) Coal C) Copper D) Iron Answer: A) Gold
- The Selenge River contributes to the ecosystem of which significant natural feature? A) Gobi Desert B) Lake Baikal C) Altai Mountains D) Khentii Mountains Answer: B) Lake Baikal
- Which river forms part of the border between Mongolia and Russia? A) Onon River B) Kherlen River C) Selenge River D) Orkhon River Answer: C) Selenge River
- The Orkhon River is known for what type of environmental challenge? A) Pollution B) Flooding C) Drought D) Erosion Answer: A) Pollution
- Which river’s valley is known for nomadic herding? A) Kherlen River B) Onon River C) Selenge River D) Orkhon River Answer: D) Orkhon River
- Which river is considered sacred by the local nomadic tribes? A) Kherlen River B) Orkhon River C) Onon River D) Selenge River Answer: C) Onon River
| River Name | Length (km) | Source | Mouth | Significance |
| Selenge River | 1,124 | Khentii Mountains | Lake Baikal (Russia) | Longest river in Mongolia; vital for ecosystems and fisheries. |
| Orkhon River | 1,124 | Khangai Mountains | Selenge River | UNESCO World Heritage site; important for Mongolian history. |
| Onon River | 818 | Khentii Mountains | Amur River (Russia) | Known as the “mother river”; historically significant. |
| Kherlen River | 512 | Khentii Mountains | Lake Uvs | Important for agriculture; flows through eastern Mongolia. |
| Hovd River | 470 | Khangai Mountains | Lake Uvs | Significant for irrigation; flows through the Hovd Province. |
| Ider River | 380 | Khangai Mountains | Selenge River | A tributary of the Selenge; important for local agriculture. |
| Tuy River | 210 | Khangai Mountains | Ider River | Smaller river, contributing to local irrigation systems. |
| Khalkh River | 250 | Khentii Mountains | Onon River | Significant for local wildlife and ecology. |