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प्रश्न
Bauxite has the composition
पर्याय
\[\ce{Al2O3}\]
\[\ce{Al2O3.{n}H2O}\]
\[\ce{Fe2O3.2H2O}\]
None of these
MCQ
उत्तर
\[\ce{Al2O3.{n}H2O}\]
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संबंधित प्रश्न
The chemical formula of willemite is __
(a) ZnS
(b) ZnCO3
(c) ZnO
(d) Zn2SiO4
Give the uses of zinc.
The sulphide ore of iron is ____________.
The important ore of iron is:-
In the thermite process, the reducing agent is:
In the electrolytic process for the extraction of aluminium the electrolyte is:-
Which of the following is not ore of aluminium?
Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?
Match List I with List II.
| List - I | List - II | ||
| 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 option given below.
The ore that contains both iron and copper is ______.
