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Chemistry

Chemistry
The most abundant constituent of atmospheric air is :

Oxygen
Nitrogen
Carbon
Hydrogen

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Chemistry
Aluminium chloride is

Bronsted Lowry Acid
Arrhenius Acid
Lewis Base
Lewis Acid

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Chemistry
Copper is refined by

Oxidation
Zone refining
Roasting
Electrolysis

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Chemistry
Which acid is used in Lead storage battery?

Hydrochloric acid
Nitric acid
Acetic acid
Sulphuric acid

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Chemistry
Which of the following is used in welding broken pieces of iron rails and machine parts?

Solder
Aluminium sulphate
Aluminium powder
None of these

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Chemistry
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is

3.05 gram
5.05 gram
4.05 gram
2.05 gram

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