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Chemistry

Chemistry
Sour milk contains

Tartaric acid
Citric acid
Lactic acid
Acetic acid

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Chemistry
Which one of the following elements is used in the manufacture of fertilizers ?

Fluorine
Aluminium
Potassium
Lead

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Chemistry
Benzene cannot undergo :

Elimination
Oxidation
Substitution
Addition

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Chemistry
Among the following, carbonate ore of Zinc is

Zincite
Zincblende
Calamine
Sphalerite

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Chemistry
The gas used for filling weather balloons is

Air
Helium
Nitrogen
Hydrogen

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Chemistry
Basicity of boric acid, H3BO3 is

3
4
2
5

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