Match list I with list II
List I | List II | ||
A | Siderite | I | Aluminum |
B | Malachite | II | Iron |
C | Calamine | III | Copper |
D | Bauxite | IV | Zinc |
Choose the correct answer from the options given below:
A-I, B-II, C-III, D-IV
A-II, B-III, C-IV, D-I
A-IV, B-III, C-II, D-I
A-III, B-II, C-IV, D-I
the correct answer is: A-II, B-III, C-IV, D-I.
The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is?
Consider the following statements about the oxides of halogens
A. At room temperature, OF2; is thermally stable
B. Order of stability of oxides of halogens is I > Br > Cl
C. I2O5 is used in the estimation of CO
D. ClO2; is used as a bleaching agent
The correct statements are
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –