Q. 323.8( 8 Votes )
Give one example of a oxidation -reduction reaction which is also:
(a) a combination reaction
(b) a displacement reaction
Copper combines with oxygen to form copper oxide and it is also a oxidation-reduction reaction.
Here hydrogen displaces copper to form dihydrogen oxide(water).
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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
(b)Lakhmir Singh & Manjit Kaur - Chemistry