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Chemistry

Chemistry
Which mineral is the ore of aluminium ?

Bauxite
Haematite
Magnetite
Siderite

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Chemistry
The oxidation number of nickel in K4[Ni(CN)4] is

–4
Zero
8
4

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Chemistry
Cloud is a colloidal dispersion of

Air in a dispersion medium of water
Fog in a dispersion medium of water
Water drops in a dispersion medium of air
Mist in a dispersion medium of air

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Chemistry
Bauxite is an alloy of which of the following metals ?

Silver
Aluminium
Tin
Iron

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Chemistry
Persons working in cement plants and lime stone quarries are prone to disease like

Pneumoconiosis
Cancer
Silicosis
Asthma

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Chemistry
Which one of the following metals pollutes the air of a city having large number of automobiles?

Cadmium
Chromium
Lead
Copper

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MORE MCQ ON Chemistry

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