Class 9 Chemistry MCQs - Chapter 2
Electrochemistry Quiz Questions & Answers PDF Download - 7
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Electrochemistry Exam Questions and Answers PDF Download: Test 7
Rusting of iron occurs due to
- reduction
- hydrogenation
- oxidation
- sublimation
The element reduced in following reaction 2Ca + O2 2CaO is
- Ca
- O2
- CaO
- none of above
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