Q. 35 A4.6( 8 Votes )
What do you understand by exothermic and endothermic reactions?
In reaction where heat is absorbed are known as endothermic. The heat energy is gained from the atmosphere in this reaction. The heat required to initiate the reaction is fairly high than the heat given from the reaction.
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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