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Why are decomposition reactions called the opposite of combination reactions? Write equations for these reactions.

NCERT Class 10th Science Chapter 1 Chemical Reactions and Equations


In decomposition reaction, a single reactant split to form two product where as inn combination reaction two reactant split to form one product....that is why it is called opposite
     e.g combination-----c+o2---> c02
caco3 -----heat--> cao +c02
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