Which process is not used in purification of bauxite?
1. Hall's method
2. Baeyer's method
3. Serpek's method
4. Frankland's method
Chloride ore among the following is:
1. malachite
2. magnesite
3. magnetite
4. Karnalite
Chalcogens are:
1. hydrocarbons
2. ore forming elements
3. oxide forming elements
4. those having ability to catenate
The following equation represents a method of purification of nickel by,
Ni + 2CO Ni(CO)4 Ni +4CO this method is:
impure pure
1. Cupellation
2. Mond's process
3. Van Arkel method
4. Zone refining
Which pair of elements can form alloy?
1. Zn and Cu
2. Fe and Hg
3. Fe and C
4. C and Pt
Cupellation process is used in the metallurgy of:
1. copper
2. silver
3. lead
4. iron
Chile saltpetre is the ore of:
1. Mg
2. K
3. Na
4. Ca
Blast furnace is used in the metallurgy of:
1. Al
2. Fe
3. gold
4. Ag
Liquation is used to purify:
1. Pb
2. Sn
3. Bi
4. All
Wolframite ore contains:
1. Zn
2. W
3. Hf
4. Au