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प्रश्न
Which of the following statements are correct?
(i) A depressant prevents certain type of particle to come to the froth.
(ii) Copper matte contains \[\ce{Cu2S}\] and \[\ce{ZnS}\].
(iii) The solidified copper obtained from reverberatory furnace has blistered appearance due to evolution of \[\ce{SO2}\] during the extraction.
(iv) Zinc can be extracted by self-reduction.
उत्तर
(i) A depressant prevents certain type of particle to come to the froth.
(iii) The solidified copper obtained from reverberatory furnace has blistered appearance due to evolution of \[\ce{SO2}\] during the extraction.
Explanation:
Depressants can prevent frothing of a particular sulphide. The solidified copper obtained in reverberatory furnace has blistered appearance hence it is called blister copper.
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संबंधित प्रश्न
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The chief metal which occur in nature in free state as well as in combined state.
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What is an alloy? An alloy usually has some property which makes it useful in a specific way.
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What is the special property of : type metal?
A to F below relate to the source and extraction of either zinc or aluminium.
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
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- Aluminium
Find the odd one out of the following and explain your choice : Copper, Lead, Zinc, Mercury
Name the following :
An ore of zinc containing its sulphide.
