Q. 34.0( 5 Votes )
Which is the reducing agent in the following reaction?
MnO2(s) + 4HCl (aq) → MnCl2(s) + 2H2O(ℓ) + Cl2(ℓ)
HCl is oxidized by gaining oxygen atoms. Thus, HCl is a reducing agent as it 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