Q. 15.0( 2 Votes )
Write true or false for the following statements:
On heating the crystals of ferrous sulphate, the colour changes from green to grey.
When green crystals of ferrous sulphate (FeSO4) are heated, the crystals lose water and the colour of the crystals changes to brown. This is decomposition reaction.
Hence, the give statement is false.
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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