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Standard VIII
Chemistry
Chemical Properties of Metals
Gold normally...
Question
Gold normally occurs in nature
(a) in free state.
(b) as carbonate ore.
(c) as sulphate ore.
(d) as sulphide ore.
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Solution
(a) in free state
Gold is an inert metal and doesn't react easily, therefore, it occurs in free state in nature.
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Q.
Calcium occurs as a/an___________.
(a) oxide ore (b) halide ore (c) carbonate ore (d) sulphide ore
Q.
Copper occurs as a/an _________.
(a) oxide ore (b) halide ore (c) carbonate ore (d) sulphide ore
Q.
Name one metal each occurring as a
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(b) halide ore
(c) carbonate ore
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Q.
Match column A with column B and select the correct option:
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Column B
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(a)
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(i)
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(c)
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(d)
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Q.
(a) Name two metals which are found in free state in nature.
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ā(c) Describe the extraction of zinc metal from its sulphide ore as well as its carbonate ore. Write equations of all the reactions involved.
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