Chelation is a form of chemical weathering by
Plants
Animals
Human beings
All of the above
Mining, quarrying and blasting of hills and ridges by dynamites for road and dam construction, are the examples of
Mechanical weathering
Chemical weathering
Biological weathering
Biochemical weathering
Weathering
Helps in the process of soil formation
Paves the way for erosional process to operate easily
Causes gradual lowering of the height of the affected area
All of the above
Disintegrated and fragmented rock materials due to mechanism of weathering process are called
Regoliths
Rock wastes
Talus
Rock materials
The development of stone lattice, tors, buttes talus cones, talus fans, etc. takes place by
Differential weathering
Mechanical weathering
Chemical weathering
Biological weathering
Igneous rocks are mostly affected by the process of
Carbonation
Oxidation
Hydration
Desilication
Who believed that completely ‘sterile weathering’ was impossible?
Worcestar
B.B. Polynov
B. Levin
Lobeck
“Chelation is a complex organic process by which metallic cations are incorporated into hydrocarbon molecules” ---- who stated that?
D. S. Lehman
C. D. Ollier
B. B. Polynov
B. Levin
The ___ of iron-rich Vindhyan sandstones of the Kaimar ranges and Rewa scraps (M.P.) has helped in the block disintegration of massively bedded and well jointed sandstone capping.
Carbonation
Chelation
Hydration
Oxidation
Which of the following is a chemical reaction between mineral and water, that is between hydrogen (H) ions or hydroxyl (OH) ions and the ions of the mineral?
Oxidation
Hydration
Hydrolysis
Chelation
The collective term for gravitational or down slope movements of weathered rock debris is
Mass-wasting
Rock-wasting
Mud-flow
Rock-falls
Which of the following is the factors of mass movement which increases the shear strength?
Removal of lateral support
Transitory earth stress
Removal of underlying support
All of the above
Which of the following is not the factors of mass movement which decreases (reduce) the shear strength of materials?
Changes of structure
Lateral pressure
Changes in intergranular forces due to water content
Weathering and other physio-chemical reactions
“Mass-wasting where in a mass of rock or weathered debris moves downhill along discrete shear surface is defined as a slide” was stated by
A. L. Bloom
M. J. Selby
R. J. Chorley
Peter Hagette
Which of the following are relatively small landslides confined to the removal of individual and superficial blocks from a cliff base?
Soil creep
Debris fall
Rock fall
Earth fall