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CHEMISTRY

Chemistry
Stalactites and Stalagmites form due to the precipitation of :

CaCO3
MgCO3
MgCl2
CaCl2

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

Ruby
Emerald
Pearl
Sapphire

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Chemistry
The chemical substance present in bones and teeth is

Calcium phosphate
Calcium chloride
Calcium sulphate
Calcium borate

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Chemistry
Baryllium Sulphate is less soluble in water due to

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

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Chemistry
Chile saltpeter is the common name of:

Sodium nitrate
Potassium nitrate
Sodium nitrite
Potassium nitrite

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