CHEMISTRY
1 .
The reaction is carbonate and bicarbonate ions with mineral is called
A)
hydrolysis
B)
carbonation
C)
oxidation
D)
solution

Correct Answer : Option (B) - carbonation

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2 .
The metamorphism which involves the chemical replacement of elements in rock minerals when gases and liquids permute into bedrock is called
A)
dynamic metamorphism
B)
metasomatic metamorphism
C)
thermal metamorphism
D)
contact metamorphism

Correct Answer : Option (B) - metasomatic metamorphism

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3 .
The relative abundance of dissolved salts in seawater in descending order is as follows
A)
chlorine, sodium, sulphate, magnesium, calcium, potassium
B)
sodium, chlorine, magnesium, potassium, sulphate, calcium
C)
chlorine, magnesium, calcium, sodium, potassium, sulphate
D)
chlorine, sodium, magnesium, calcium, potassium, sulphate

Correct Answer : Option (A) - chlorine, sodium, sulphate, magnesium, calcium, potassium

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4 .
The sulphites are a mineral group that contain one or more metallic elements in combination with the sulphate compound ____
A)
SO3
B)
SO2
C)
SO4
D)
SO

Correct Answer : Option (C) - SO4

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5 .
The most important factor that is affecting all the chemical weathering processes is
A)
vegetation
B)
topography
C)
climate
D)
None of the above

Correct Answer : Option (C) - climate

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6 .
The main percentage of the volume of water in the hydrosphere is in
A)
oceans and seas
B)
groundwater's, rivers and streams
C)
glaciers and ice sheets
D)
freshwater lakes and water vapours

Correct Answer : Option (A) - oceans and seas

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