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Science TNSB Mentoring
Class 10 Crash course
Periodic classification of elements
Metallurgy of aluminium
1.
Methods of concentration of ore and extraction of metals
Question:
2
m.
Choose the best answer:
1.
Magnetic separation is used when the ore
is soluble in water
is non-metallic
is heavier than gangue
is magnetic in nature
2.
Which metal can be obtained by thermal decomposition of its oxide?
Mercury
Aluminium
Magnesium
Zinc
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