Advertisements
Advertisements
प्रश्न
Name the following:
The process of heating a substance very strongly in such a way that it does not combine with oxygen.
उत्तर
Calcination.
APPEARS IN
संबंधित प्रश्न
In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?
Name the method by which aluminium metal is extracted.
Explain why, an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.
Name two metals which are always found in combined state.
What is passive iron?
Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.
Explain the concept of Calcination.
Explain in brief types of extraction of highly reactive metals according to their reactivity.
Observe the figure and answer the following.
- Write the name of the method.
- What is used as anode and cathode in this method?
- Write the molecular formula and use of cryolite.
- Write anode reaction.
- Write cathode reaction.
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Give a reason why Aluminium is preferably used in thermite reactions.
