Advertisements
Advertisements
प्रश्न
Name the following:
The substance added to get rid of gangue in the extraction of metal.
उत्तर
Flux.
APPEARS IN
संबंधित प्रश्न
Metallic oxides of zinc, magnesium and copper were heated with the following metals.
| Metal | Zinc | Magnesium | Copper |
| Zinc oxide | – | – | – |
| Magnesium oxide | – | – | – |
| Copper oxide | – | – | – |
In which cases will you find displacement reactions taking place?
Name two ores of zinc. Write the names of the chemical compounds present in them and give their chemical formulae.
Which metal is extracted from calamine ore?
Define the term : Flux
What is meant by concentration of ores?
Which one of the following is not true of metal :
Metals form non-polar covalent compounds
Choose the correct answer from the options given below:
The metal is a liquid at room temperature.
Name the following :
The Process of heating an ore to a high temperature in the presence of air.
The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point.
Explain concept with example/explain with the help of a balanced equation.
Roasting
