Q.1.  world's driest place

 ans: Atacama Desert Chile

 Q.2.  world's highest waterfall

 ans: Angel Falls

 Q.3.  world's largest waterfall

 ans: Guayara Falls

 Q.4.  world's widest waterfall

 ans: Khon Falls

 Q.5.  world's largest salt water lake

 ans: Caspian Sea

 Q.6.  world's largest fresh water lake

 ans: lake superior

 Q.7.  world's deepest lake

 ans: Lake Baikal

 Q.8.  world highest lake

 ans: Titicaca

 Q.9.  world's largest artificial lake

 ans: volga lake

 Q.10.  world's largest delta

 ans: Sundarbans Delta

 Q.11.  world's greatest epic

 ans: mahabharat

 Q.12.  world's largest museum

 ans: American Museum of Natural History

 Q.13.  world's largest zoo

 Ans: Krueger National Park (D. Africa)

 Q.14.  world's largest bird

 Ans: Ostrich (Ostrich)

 Q.15.  world's smallest bird

 ans: humming bird

 Q.16.  world's largest mammal

 ans: blue whale

 Q.17.  world's largest temple

 Ans: Temple of Angkor Wat

 Q.18.  tallest statue of mahatma buddha in the world

 ans: Ulaanbaatar (Mongolia)

 Q.20.  world's largest bell tower

 ans: The Great Bell of Moscow

 Q.21.  world's largest statue

 Ans: Statue of Liberty

 Q.22.  World's largest Hindu temple complex

 ans: Akshardham Temple Delhi

 Q.23.  world's largest mosque

 ans: Jama Masjid - Delhi

 Q.24.  tallest mosque in the world

 Ans: Sultan Hassan Mosque, Cairo

 Q.25.  world's largest church

 Ans: Vasilica of St. Peter (Vatican City)

 Q.26.  longest railway line in the world

 ans: Trans - Siberian Line

 Q.27.  longest railway tunnel in the world

 ans: Seikan Railway Tunnel Japan

 Q.28.  World's longest railway platform

 Ans: Gorakhpur (Length- 1355m)

 Q.29.  world's largest railway station

 ans: Grand Central Terminal New York

 Q.30.  busiest airport in the world

 ans: Chicago - International Airport