UPSC NDA II 2018 General Ability Solved Paper

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Question : 104 of 150

Marks: +1, -0

Which one of the following is an oxidation-reduction reaction ?

[NDA II 2018]

NaOH+HCI→NaCl+H2O
CaO+H2O→Ca(OH)2
2Mg+O2→2MgO
Na2SO4+BaCl2→BaSO4+2NaCl

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