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CHEMISTRY

Chemistry
Stalactites and Stalagmites form due to the precipitation of :

CaCO3
MgCl2
MgCO3
CaCl2

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Chemistry
Which of the following is not a precious/semi-precious stone?

Pearl
Ruby
Emerald
Sapphire

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Chemistry
The chemical substance present in bones and teeth is

Calcium sulphate
Calcium phosphate
Calcium chloride
Calcium borate

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Chemistry
Baryllium Sulphate is less soluble in water due to

High inflammable energy
Lonic band
Low Energy of dissociation
Low inflammable energy

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Chemistry
Chile saltpeter is the common name of:

Sodium nitrite
Potassium nitrite
Sodium nitrate
Potassium nitrate

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