| 1 |
Raw materials used in Solvay's process. |
Brine
Lime stone
Ammonia gas
All
|
| 2 |
A saturated solution of sodium chloride is called. |
Brine
Suspension
Colloidal
None of these
|
| 3 |
Which contains sufficient amount of metal? |
Mineral
Ores
Rocks
Soil
|
| 4 |
Compound of metal exist under earth crust are called. |
Ore
Gangue
Minral
None of these
|
| 5 |
Froth flotation process is used to concentrate. |
Copper ore
Iron ore
Chromium ore
Aluminum ore
|
| 6 |
The process of roasting during metallurgy of copper is carried out in a special furnace called. |
Blast furnace
Fire furnace
Bessemer converter
Reverberatory furnace
|
| 7 |
Blast furnace usually used for the metallurgy of. |
Iron
Copper
Aluminum
Both a and b
|
| 8 |
Metallurgy involves which of the following steps? |
Mining and enrichment
Reduction
Refining and casting.
All of these
|
| 9 |
The elements that do not conduct heat and electricity are called. |
Metallurgy
Non metal
Metalloid
Alloy
|
| 10 |
Which one of the not metal. |
Copper
Carbon
chromium
Iron
|
| 11 |
Process of heating the concentrated ore to high temperature in excess of air is called. |
Roasting
Smelting
Bessemerization
All
|
| 12 |
Red hair contains compound of. |
Iron
copper
titanium
Molybdenum
|
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