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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
Name the following: Main ore of aluminium.
In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?
A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was upset, but after a futile argument, the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?
In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.
Name two metals which occur in nature in free state as well as in combined state.
Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?
(a) Al2O3 + Fe
(b) MnO2 + Al
(c) Fe2O3 + Al
(d) Cu2O + Fe
Which method of refining is used to get 99.8% pure aluminium?
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.
State the property of the metal being utilized in the following :
| Use of metal | Property |
| Zinc in Galvanization | |
| Aluminium in Thermite welding |
Complete the following by selecting the correct option from the choices given:
The metal which does not react with water or dilute H2SO4 but reacts with concentrated H2SO4 is _________
