81) Which one of the following parts of cold deserts and continents is correctly matched?
(A) Atacama....South America
(B) Gobi....Asia
(C) Kalahari.....Africa
(D) Great Sandy.....Australia
82) The production of rubber tree is better adopted to areas where the climate is _________
(A) Warm and humid
(B) Warm and dry
(C) Cool and moist
(D) Cool and dry
83) Gulf streams are caused by _________
(A) Cyclones
(B) Temperature
(C) Ocean Pressure
(D) Difference in water level
84) All vital atmospheric process leading to various climatic and weather conditions take place in the _________
(A) Troposphere
(B) Ionosphere
(C) Exosphere
(D) Stratosphere
85) The minimum land area recommended for forest cover to maintain proper ecological balance is
(A) 25%
(B) 33%
(C) 43%
(D) 53%
86) Which one of the following scholars suggested the earth's origin from gases and dust particles?
(A) James Jeans
(B) H.Alfven
(C) F.Hoyle
(D) O.Schmidt
87) The theory that refers to an explosion about 10 to 15 billion years ago, which most astronomers believe to be the origin of the Universe, is called __________
(A) The Red Shift Theory
(B) Relativity Theory
(C) Big Bang Theory
(D) Titanic Theory
88) Black holes are stellar objects which ________
(A) Emit black body radiation
(B) Have weak gravitational field
(C) Have intense gravitational field
(D) Have intense magnetic field
89) Select the stranger in the group:
(A) Cartograms
(B) Multiple bars
(C) Weather maps
(D) Pie diagrams
90) The soil which cracks and shrinks most as it dries is _________
(A) Clayey soil
(B) Porous soil
(C) Sandy soil
(D) Loamy soil