41. The main types of air mass include

I. Maritime tropical(mT)
II. Maritime polar(mP)
III. Maritime arctic(mA)
IV. Continental polar(cP)

A. All of the above
B. I, III, IV
C. I, IV
D. I, II

42. The major motion of the planet earth includes

A. Rotation
B. Revolution
C. Both (a) and (b)
D. Any of these depending upon the question under construction

43. The most salty sea in the world is

A. Red sea
B. Dead sea
C. Arabian sea
D. Mediterranean sea

44. The most densely populated regions in the world are

A. The monsoon climatic regions
B. The equatorial regions
C. The hot desert climatic regions
D. The summer climatic regions

45. The most notable example of a tectonic valley is that of the

A. Doon Valley
B. Kashmir Valley
C. Plains of Aksai Chin
D. None of the above