0-0
Correct Answer:- Option-C
Question38:-Which of the following pairs regarding earth's crustal composition is incorrect 7
A:-Oxygen-46.6%
B:-Silicon-27.7%
C:-Aluminium-8.1%
D:-Iron-4%
Correct Answer:- Option-D
Question39:-The weathering process which produce clay minerals from feldspar minerals.
A:-Hydration
B:-Hydrolysis
C:-Oxidation
D:-Carbonation
Correct Answer:- Option-B
Question40:-The seismic wave which can travel through both solids and liquids is
A:-P-wave
B:-S-wave
Ci-L-wave
D:-R-wave
Correct Answer:- Option-A
Question41:-Photochemical smog is formed by the reaction between the following components in the atmosphere
A:-By the action of sunlight ೧೧ NOXx, ozone, hydrocarbons
B:-By the action of sunlight on NOx, oxygen, hydrocarbons
C:-By the action of sunlight on SOx, ozone, hydrocarbons
D:-By the action of sunlight on SOx, oxygen, hydrocarbons
Correct Answer:- Option-A
Question42:-Normal average thickness of stratospheric o0zone layer across the globe is around
A:-200 DU
B:-300 DU
C:-400 DU
D:-500 DU
Correct Answer:- Option-B
Question43:-Which of the following pair regarding global distribution of water is wrongly matched 7
A:-Glaciers-2.15%

B:-Groundwater-0.3%
C:-Streams-0.1%
D:-Soil moisture-0.005%
Correct Answer:- Option-C
Question44:-Which predominant species of *CO_2" occur in water under alkaline condition 7
A:-"HCO_(3-)
B:-CO

0:00 3
Correct Answer:- Option-D
Question45:-The various stages of formation of coal in the ranking order is as
A:-Peat, lignite, bituminous, anthracite
B:-Peat, lignite, anthracite, bituminous
C:-Lignite, peat, anthracite, bituminous
D:-Lignite, peat, bituminous, anthracite
Correct Answer:- Option-A
Question46:-Example of a mineral without cleavage
A:-Feldspar
B:-Pyroxene
C:-Calcite
D:-Quartz
Correct Answer:- Option-D
Question47:-In a typical soil profile, true soil is represented by
A:-A-horizon
B:-B-horizon