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Chemistry

Chemistry
A subshell with l=2 can take up

8 electron
5 electron
3 electron
10 electron

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Chemistry
Domestic cooking gas consists mostly of

Methane and ethane
Liquified butane and isobutane
Ethylene and carbon monoxide
Hydrogen and acetylene

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Chemistry
Heating of a ore below its melting point in the absence of air is known as

Refining
Roasting
Smelting
Calcination

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Chemistry
Ultraviolet rays can be used in water treatment as

Disinfectant
Precipitator
Hydrolyser
Flocculator

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Chemistry
The metal extracted from Bauxite is :

Silver
Copper
Aluminum
Manganese

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Chemistry
Diamond is harder than graphite because of :

None of these
Tetrahedral structure of diamond
Difference of crystalline structures
Difference in layers of atoms

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MORE MCQ ON Chemistry

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