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प्रश्न
State one observation for each of the following :
Copper sulphate solution is electrolysed using copper electrodes.
उत्तर
When copper electrodes are used then the mass loss of copper from anode is equal to mass gained and deposited on – ve electrode
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संबंधित प्रश्न
Define the Ore.
What is meant by the 'concentration of ore'?
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
The metal which is always present in an amalgam is:
(a) iron
(b) aluminium
(c) mercury
(d) magnesium
Observe the given figure of reactivity series of metals and answer the following questions:
Reactivity series of metals
- Name two metals which react with water.
- Name two moderately reactive metals.
- Name the most highly reactive metal and the most less reactive metal.
In electrolytic reduction of alumina _______ is used as a cathode.
Explain in brief electrolytic reduction of alumina with a neat labelled diagram.
The poorest conductor of heat among metals is ____________.
In thermite welding a mixture of ____________ is ignited with a burning magnesium ribbon which produces molten iron metal as a large amount of heat is evolved.
Which of the statements about the reaction, \[\ce{ZnO + CO -> Zn + CO2}\] is correct?
