19. Which of the following is/are endothermic reaction?
(A)2 f e s o4----→fe2o3+s o 2+s o 3.
(B)3pb(no3)2----→2pbo+4no2+o2
(C)2agbr----→2ag+br2
(D)all of these
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Answer:
c) is endothermic reaction
krishvirat19:
how
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Heya ur ans......
D) all of these
because all decomposition reaction need heat to break down and hence are endothermic in nature
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