11 Which country has the largest rail network in the world?

USA

12 Which is the longest nonstop flight?

Singapore Airlines (BBC 2018 report)

13 Which is the longest car tunnel in the world?

Lærdal Tunnel

14 Where is the world longest car tunnel located?

Norway

15 Which is the deepest undersea road tunnel in the world?

Eiksund tunnel

16 Where is the world deepest undersea road tunnel located?

Norway

17 In which country will you find the world’s longest road tunnel?

Norway

18 In which country is the longest underwater rail tunnel The Seikan Tunnel situated?

Japan

19 Which was the first steel bridge in the world?

Eads Bridge

20 Which is longest bridge in the world?

Zhuhai Bridge