Nepal Largest, Smallest, Biggest, Highest, Deepest , Tallest, Longest,

1. Largest Province by Area : Karnali pradesh
2. Smallest Province by Area : Janakpur
3. Largest Province by Population : Province no 3
4. Smallest Province by Population : Karnali Province
5. Highest Waterfall : Hyatrung falls (Terhathum)
6. Biggest Lake : Rara Lake
7. Deepest Lake : Phoksundo Lake
8. Longest River : Koshi River
9. Deepest Vally : Arun Vally
10. Largest Cave : Siddha Gufa
11. Deepest River : Narayani
12. Largest Hydroelectric : Kaligandaki Hydropower Plant, Syangja (144,000 kW)
13. First Hydroelectric : Pharping Hydropower plant (1911)
14. Largest National Park : Shey-Phoksundo National Park
15. Deepest Gorge : Kali Gandaki

Deepest

1. Deepest Lake - Lake Baikal
2. Deepest Ocean - Mariana Trench (Pacific Ocean)
3. Deepest River - Congo River
4. Deepest Cave - Veryovkina

Tallest

1. Tallest building - Burj Khalifa in Dubai
2. Tallest Animal in the World - Giraffe
3. Tallest Falls - Angel Falls
4. Tallest Statue - Statue of Unity

Largest

1. Largest Zoo - Kruger National Park, South Africa
2. Largest Bird - Ostrich
3. Largest Delta - Sunderban Delta, W. Bengal
4. Largest City in terms of Population - Tokyo
5. Largest Continent - Asia
6. Largest (Population) Country - China
7. Largest Creature - Blue Whale
8. Largest Desert - Sahara
9. Largest Dam - Three Gorges Dam
10. Largest Epic in the World - Mahabharat
11. Largest Island - Greenland
12. Largest Library in the World - United State Library of Congress, Washington D.C.
13. Largest Sea-bird - Albatross
14. Largest River(deepest) in the Worlds - Amazon

Biggest

1. Biggest Passenger Aircraft - Airbus A380
2. 1. Longest River - Nile
   2. Driest Place in the World - Atacama Desert
   3. Highest Mountain Peak in the World - Mt. Everest
   4. Highest Mountain Range - Himalayas
   5. Highest Plateau in the World - Tibetan plateau
   6. Longest Railway - Trans-Siberian Railway
   7. Longest Railway Station - Grand Central Terminal, Chicago
   8. Longest Railway Platform - Gorakhpur (Uttar Pradesh)
   9. Longest Railway Bridge in the World - Danyang–Kunshan Grand Bridge
   10. Longest Canal in World Beijing-Hangzhou Grand Canal
   11. Longest Wall - Great wall of China
   12. Fastest Bird in the World - Swift
   13. Smallest Bird in the World - Humming Bird
   14. Costliest City in the World - Singapore
   15. Smallest Continent - Australia
   16. Biggest Country(Area) in the World - Russia
   17. Biggest Forest Area - taiga (Russia)
   18. Hottest Place in the World - Death Valley, California, USA.
   19. Coldest Place - South Pole, Antarctica
   20. Biggest Planet - Jupiter
   21. Brightest Planet - Venus
   22. Smallest Planet - Mercury
   23. Rainiest Place in the World - Mausinram (Meghalaya, India)
   24. Brightest Star - Sirius
   25. Lowest body Water in the World - Dead Sea