66. The major pedogenic process acting on soils at the macro scale are

A. lateralization and podsolisation
B. calcification and salinization
C. salinization and gleisation
D. All of the above

67. The minerals resources of the north-eastern zone include

A. Coal, Fe, Mn, Cu, Mica, U, diamond
B. Crude Petroleum and natural gas
C. Fe, Au(gold)
D. Natural gas, Fe, Au, Mn, U

68. The moon

A. Is the natural satellite of earth
B. Has no liquid water
C. Has no atmosphere
D. All of the above

69. The moon’s volume is about ____ that of earth.

A. 1/40 th
B. 1/50 th
C. 1/60 th
D. 1/20 th

70. The magnetic field of the earth, Magnetosphere expands to about

A. 9600 km above the earth’s surface
B. 8000 km above the earth’s surface
C. 64,000 km above the earth’s surface
D. None of the above