World Geography
The islands with coral covered surfaces in Bay of Bengal are

both (a) and (b)
None of these
Andaman islands
Nicobar islands

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World Geography
The relative abundance of dissolved salts in seawater in descending order is as follows

chlorine, sodium, sulphate, magnesium, calcium, potassium
sodium, chlorine, magnesium, potassium, sulphate, calcium
chlorine, sodium, magnesium, calcium, potassium, sulphate
chlorine, magnesium, calcium, sodium, potassium, sulphate

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