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प्रश्न
In Electrolytic reduction of alumina, Anode : _______ : : Cathode : Graphite lining
उत्तर
In Electrolytic reduction of alumina, Anode : Set of carbon (graphite) rods : : Cathode : Graphite lining
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संबंधित प्रश्न
Name the following:
The property possessed by metals by which they can be beaten into sheets.
In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.
Silver metal does not combine easily with oxygen but silver jewellery tarnishes after some time. How?
Fill in the following blank with suitable word:
The non-metal present in steel is ............
How is zinc extracted from its carbonate or (calamine)? Explain with equations.
How are the less reactive metals (which are quite low in the reactivity series) extracted? Explain with the help of an example.
What is meant by the 'concentration of ore'?
Name two metals which are found in nature mainly in the free state (as metallic elements).
Explain how, mercury is extracted from its sulphide ore (cinnabar). Give equations of the reactions involved.
Calamine ore can be converted into zinc oxide by the process of:
(a) dehydration
(b) roasting
(c) calcination
(d) sulphonation
A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.
(a) Name the metal and write its chemical symbol.
(b) Write the name and formula of the sulphide ore.
(c) Give the equations of chemical reactions involved in the production of metal from its sulphide ore.
(d) Name a common device in which this metal is used.
(e) Can this metal displace copper from copper sulphate solution? Why?
Aluminum is used in thermite welding:
write reaction for process?
Name the ore of mercury. With the help of balanced chemical equations, explain the process of extraction of mercury from its ore.
Compare the process of calcination and roasting.
Complete the incomplete statement with missing word:
Non-metals form acidic oxides while metals form ______.
Which one of the following is not true of metal :
Metal will have 1 or 2 or 3 electrons in their valence shell.
Zinc blende is converted to oxide by ______ process.
Froth floatation process is generally used to concentrate ______ ores.
Gold and silver are active metals.
Explain in brief types of extraction of moderately reactive metals according to their reactivity.
