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प्रश्न
Bauxite has the composition
विकल्प
\[\ce{Al2O3}\]
\[\ce{Al2O3.{n}H2O}\]
\[\ce{Fe2O3.2H2O}\]
None of these
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उत्तर
\[\ce{Al2O3.{n}H2O}\]
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संबंधित प्रश्न
Write the names and chemical formulae of any one ore of iron.
What is the role of CO in the extraction of Iron?
Which form of the iron is the purest form of commercial iron?
Which among the following minerals does NOT contain aluminium?
(a) Cryolite
(b) Siderite
(c) China clay
(d) Corundum
What is 'copper matte' ?
Metals which occur in their native state in nature:
Which among the following statement is correct?
The main reactions occurring in blast furnace during extraction of iron from haematite are:
(i) \[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]
(ii) \[\ce{FeO + SiO2 -> FeSiO3}\]
(iii) \[\ce{Fe2O3 + 3C -> 2Fe + 3CO}\]
(iv) \[\ce{CaO + SiO2 -> CaSiO3}\]
In the thermite process, the reducing agent is:
Match List - I with List - II.
| List - I | List - II | ||
| (One) | (Composition) | ||
| (A) | Siderite | (I) | FeCO3 |
| (B) | Malachite | (II) | CuCO3 · Cu(OH)2 |
| (C) | Sphalerite | (III) | ZnS |
| (D) | Calamine | (IV) | ZnCO3 |
Choose the correct answer from the options given below:
