26. The most explosive type of volcano is

A. The caldera
B. A cinder cone
C. Basalt plateau
D. Shield volcanoes

27. The lowest point, on land, in the world is

A. Death Valley, USA
B. Caspian Sea, Russia
C. Dead Sea, Jordan/Israel
D. Lake Eyre, Australia

28. The low latitude zone of the globe extends between

A. Tropic of Capricorn and Cancer
B. North pole to South pole
C. Tropic of Capricorn and equator
D. Equator and Tropic of Cancer

29. The main objective of multi-purpose river projects are

A. Extension of irrigation facilities by constructing dams to store surplus water during the rainy season, for release in summer
B. Power generation by constructing hydropower stations
C. Flood controls and making rivers navigable
D. All of the above

30. The mountains which come into being after the continental drift started, with the break up of the large land mass of pangola are

A. Young mountains
B. Old mountains
C. Volcanic mountains
D. Fold mountains