21) Aletsch glacier is located in __________
(A) Switzerland
(B) Norway
(C) United States
(D) China
22) Montekao Pass is located in ___________
(A) China
(B) Nepal
(C) Chile
(D) Canada
23) Khojak Pass is situated in _________
(A) India
(B) Pakistan
(C) Nepal
(D) Bhutan
24) What is the total length of Khyber Pass?
(A) 52 km
(B) 54 km
(C) 56 km
(D) 58 km