Advertisements
Advertisements
प्रश्न
Which form of the iron is the purest form of commercial iron?
Advertisements
उत्तर
Wrought iron is the purest form of commercial iron.
APPEARS IN
संबंधित प्रश्न
Write the names and chemical formulae of any one ore of iron.
Out of C and CO, which is a better reducing agent at the lower temperature range in the blast furnace to extract iron from the oxide ore?
In the extraction of Al, impure Al2O3 is dissolved in conc. NaOH to form sodium aluminate and leaving impurities behind. What is the name of this process?
Name the method used for refining of copper metal.
Which of the ores mentioned can be concentrated by magnetic separation method?
Which among the following minerals does NOT contain aluminium?
(a) Cryolite
(b) Siderite
(c) China clay
(d) Corundum
Metals which occur in their native state in nature:
Which among the following statement is correct?
Which of the following reactions occur during calcination?
(i) \[\ce{CaCo3 -> CaO + CO2}\]
(ii) \[\ce{2FeS2 + 11/2 O2 -> Fe2O3 + 4SO2}\]
(iii) \[\ce{Al2O3. {x}H2O -> Al2O3 + {x}H2O}\]
(iv) \[\ce{ZnS + 3/2 O2 -> ZnO + SO2}\]
Write the chemical reactions involved in the extraction of gold by cyanide process. Also give the role of zinc in the extraction.
