11) Trade winds of the northern hemisphere blow from the north-east to south-west due to
(A) Coriolis force
(B) Gravitational force
(C) Centripetal force
(D) None of the above
12) Which country is known as Thunderbolt of Asia?
(A) Bhutan
(B) Mongolia
(C) China
(D) None of the above
13) One of the country through which equator passes is?
(A) Malaysia
(B) China
(C) Malta
(D) Pakistan
14) The depletion of ozone layer has been caused mainly by ________
(A) the deforestation of large area of land
(B) the release of chlorofluorocarbons into the atmosphere
(C) changes in asteroid activity in the solar system
(D) the release of industrial waste
15) Which layer of atmosphere provides ideal conditions for flying aeroplanes?
(A) Troposphere
(B) Stratosphere
(C) Ionosphere
(D) Exosphere
16) Through which one of the following countries the equator does not pass?
(A) Tanzania
(B) Kenya
(C) Zaire
(D) Uganda
17) A line on a map joining places of equal monthly or yearly rainfall is called __________
(A) Isobar
(B) Isohyet
(C) Isotherm
(D) Isoneph
18) The Earth revolves around the Sun in an elliptical orbit. Its speed __________
(A) Is greatest when it is farthest from the Sun
(B) Is greatest when it is closest to the Sun
(C) Remains the same at all points on the orbit
(D) Goes on decreasing continuously
19) The origin of earth dates back to approximately ________
(A) 3.6 billion years
(B) 4.6 billion years
(C) 5.6 billion years
(D) 6.6 billion years
20) The term 'Ecliptic' is used for the ___________
(A) Sun when eclipsed
(B) Moon when eclipsed
(C) Sun's path in the sky during a year
(D) Path of Earth around the Sun