Q. 21 B5.0( 3 Votes )
Give two examples each of:
The reactions in which oxidation and reduction are taking place at the same time are called redox reactions.
In the above example, Fe2O3 is reduced to Fe by losing oxygen atoms.
Thus, Fe undergoes reduction.
CO is oxidized to CO2 by gaining oxygen atom. Thus, C undergoes oxidation.
CuO + H2→ Cu + H2O
In the given reaction, CuO is reduced to Cu by losing oxygen. Thus, Cu undergoes reduction.
H2 is oxidized to H2O by gaining oxygen atom. Thus, H2 undergoes oxidation.
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Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to:
(i) The formation of silver by decomposition of silver chloride
(ii) Sublimation of silver chloride
(iii) Decomposition of chlorine gas from silver chloride
(iv) Oxidation of silver chlorideEvergreen Science
Which of the following are exothermic processes?
(i) Reaction of water with quicklime
(ii) Dilution of an acid
(iii) Evaporation of water
(iv) Sublimation of camphor (crystals)Evergreen Science