51. The middle latitude extends between

A. 23(1/2)° North to 32(1/2)° South
B. 23(1/2)° and 66° in both the hemispheres
C. 66° North to 66° South
D. North pole and South pole

52. The major graphite producing country is

A. Russia
B. Sri Lanka
C. India
D. China

53. The maximum soil fertility occurs in the pH range of

A. 5.0 to 6.2
B. 6.0 to 7.2
C. 7.0 to 8.2
D. 4.0 to 5.2

54. The mica belt of the Himalayas, the major part of it is situated in

A. Andhra Pradesh
B. Bihar
C. Rajasthan
D. West Bengal

55. The most well-known member of the Halick group is

A. Halite
B. Pyrite
C. Galena
D. Hematite