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प्रश्न
Name a reducing agent that may be used to obtain manganese from manganese dioxide.
उत्तर १
Aluminium powder is the reducing agent that may be used to obtain manganese from manganese dioxide.
उत्तर २
Aluminium powder is the reducing agent that may be used to obtain manganese from manganese dioxide.
उत्तर ३
Aluminium powder is the reducing agent that may be used to obtain manganese from manganese dioxide.
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संबंधित प्रश्न
Write the steps involved in the extraction of pure metals in the middle of the activity series from their carbonate ores.
Fill in the following blank with suitable word:
The rocky material found with ores is called.............
Define the term mineral.
Name three other metals which are extracted in a manner similar to sodium.
The two metals which can be extracted just by heating their sulphides in air are:
(a) sodium and copper
(b) copper and aluminium
(c) potassium and zinc
(d) mercury and copper
The metal which can be extracted simply by heating the cinnabar ore in air is:
(a) Zn
(b) Cu
(c) Al
(d) Hg
State one observation for each of the following :
Copper sulphate solution is electrolysed using copper electrodes.
Answer the following question:
Carbon cannot reduce the oxides of sodium, magnesium, and aluminum to their respective metals. Why? Where are these metals placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.
How is the method of extraction of metals high up in the reactivity series different from that for metals in the middle? Why can the same process not be applied for them? Name the process used for the extraction of these metals.
If Cu, Fe, Zn, Al elements are arranged in increasing order of their reactivity then the correct order would be which of the following?
