46. 

The products of ____ are a major source of sediments for erosion and ____

A. weathering, deposition
B.

बयान, अपक्षय

C.

चट्टानों, अपक्षय

D.

चट्टानों, बयान


47. 

The part of the earth and thin layer of air above its surface, which support life on earth, are referred to as

A. stratosphere
B.

योण क्षेत्र

C.

बीओस्फिअ

D.

मीसोस्फीयर


48. 

The phenomenon associated with collision and subduction of the planet is

A. volcanoes
B.

द्वीप आर्क

C.

भूकंप

D.

ऊपर के सभी


49. 

The ridges of the waves are where the jet stream of waves closes to the

A. poles
B.

भूमध्य रेखा

C.

प्रधानमंत्री मध्याह्न

D.

इनमे से कोई भी नहीं


50. 

The rate of infiltration normally declines rapidly during the early part of rainstorm event and reaches a constant value after several hours of rainfall. The factors responsible for this phenomenon are

  1. the filling of fine soil pores with water, which reduces capillary forces
  2. moistened soil, clay particles to swell and reduce the size of pores
  3. raindrop impact breaking up with soil clumps, splashing fine particles into pores

A. I, II
B.

I, III

C.

II, III

D.

All of the above