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Chemistry

Chemistry
What is the principal ore of aluminium ?

Copper
Lignite
Dolomite
Bauxite

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Chemistry
Which of the following metals causes Itai-Itai disease ?

Copper
Cadmium
Cobalt
Chromium

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Chemistry
Which of the following has no unit

Electronegativity
Electron affinity
Ionization energy
Excitation potential

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Chemistry
The percentage of carbon in cost iron is :

0.5 to 1.5
6 to 8
0.01 to 0.25
3 to 5

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Chemistry
What is the mass percentage of oxygen in carbon dioxide (CO2)

0.509
0.305
0.658
0.727

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Chemistry
Quartz is made of

Sodium Silicate
Sodium Sulphate
Calcium Sulphate
Calcium Silicate

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MORE MCQ ON Chemistry

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