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ICSE Class 9 Chemistry Question 51 of 55

ICSE Questions Set in Previous Years — Question 51

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51
Question

Question 51

State whether the following conversations are examples of oxidation or reduction :

(a) Na ⟶ Na+ + e-

(b) PbO2 ⟶ PbSO4

Answer

(a) Oxidation, loss of electrons

(b) Oxidation, gain of oxygen