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प्रश्न
Explain the following term:
Ore
उत्तर
Ores are those minerals from which metals are extracted commercially at a comparatively lower cost and with minimum effort.
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संबंधित प्रश्न
State the main components of the following alloys:
Duralumin
Also give the names of their repective ores ?
How is the main ore of aluminium concentrated?
State a reason why zinc is used in:
dry cells
State the use of:
cast iron
From the metals: copper, iron, magnesium, sodium, and zinc, select a different metal in the case which does not react with dilute hydrochloric acid.
Name one metal occurring as a : Carbonate ore
Complete and balance the following equation:
Fe2O3 + → Al2O3 +
Give the name and formula of an ore of zinc.:
Roasting of the ore
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.
