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प्रश्न
Write the name and formula of two ores of the following: Aluminium
उत्तर
Aluminium: Bauxite (Al2O3) and Cryolite (AlF3.3NaF).
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संबंधित प्रश्न
Also give the names of their repective ores ?
State a reason why zinc is used in:
cosmetics?
Explain the following:
Zinc is used to cover iron so as to prevent rusting of iron. Why?
From the metals: copper iron, magnesium, sodium and zinc, select a different metal in each case
which:
for not react with cold water but reacts with steam when heated.
Name one metal occurring as a : Carbonate ore
Comment on the statement that- "All ores are minerals but all minerals are not ores".
Explain the following:
Stainless steel is more useful than steel.
Give the name and formula of an ore of zinc.:
Roasting of the ore
Name the following:
The ore of zinc containing its sulphide.
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.
