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Chemistry

Chemistry
The metal extracted from Bauxite is :

Silver
Copper
Manganese
Aluminum

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Chemistry
Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has

Stable half filled 2p sub level
Smaller atomic radius
High bond dissociation energy
High nuclear charge

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Chemistry
Which one of the following is a micro-element ?

Nitrogen
Oxygen
Hydrogen
Chlorine

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Chemistry
Glycol is used to manufacture which of the following ?

Nylon
Terylene
Artificial silk
Rubber

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Chemistry
The polymerisation of which often following is used in manufacturing of polythene in industry ?

Ethylene
Methane
Acetylene
Styrene

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Chemistry
Sodium is produced by the electrolysis of

Aqueous brine solution
Molten sodium carbonate
Its cyanide complex
Molten sodium chloride

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