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Chemistry

Chemistry
L.P.G. is mostly liquefied

Methane
Hydrogen
Oxygen
Butane

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Chemistry
Basicity of boric acid, H3BO3 is

2
3
4
5

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Chemistry
The most important ore of aluminium is

magnetite
monazite
haematite
bauxite

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Chemistry
Which of the following is a metallic ore ?

Quartz
Galena
Mica
Feldspar

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Chemistry
Surface water is a better source of drinking water because it is poor in

Bacteria
Algae
Dust
Arsenic

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Chemistry
Which of the following is used as a lubricant in heavy machines?

Sulphur
Graphite
Bauxite
Phosphorus

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