Q9 of 35 Page 42

Why does respiration considered as an exothermic reaction? Explain. (AS1)

Exothermic reaction: A reaction in which heat is released when reactants changes into products.

Respiration is considered as an exothermic reaction because:


⇒In respiration, a large amount of heat energy is released when oxidation of glucose takes place.



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What is the difference between displacement and double displacement reaction? Write equations for these reactions? (AS1)

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MnO2 + 4HCl MnCl2 + 2H2O + Cl2

In the above equation, name the compound which is oxidized and which is reduced? (A S1)