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Occurrence of Metals

Which of the ...

Question

Which of the following metals can be obtained from haematite ore?
(a) copper (b) sodium (c) zinc (d) iron

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Solution

(d) Iron
Iron can be obtained from hematite ore. Hematite ore contains the compound iron (III) oxide ( $F e_{2} O_{3})$ .

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Which metal can be extracted from each one of the following ores:

(a) bauxite (b) calamine (c) haematite.

Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper (b) mercury (c) aluminium (d) zinc

Q. State whether following statements are True or False.
(a) Generally, non-metals react with acids.
(b) Sodium is a very reactive metal.
(c) Copper displaces zinc from zinc sulphate solution.
(d) Coal can be drawn into wires.

Q. Which sequence indicates correctly the increasing reactivity of metals?
(a) iron, zinc, magnesium, sodium, potassium
(b) sodium, potassium, magnesium, zinc, iron
(c) magnesium, potassium, sodium, iron, zinc
(d) iron, zinc, sodium, magnesium, potassium

An important ore of zinc metal is :
(a) calamine (b) cuprite (c) pyrolusite (d) haematite

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