O Level Chemistry e-Book's MCQs - Complete
Valency and Chemical Formula Quiz App & e-Book Download - 401
Apps:
MCQ:
In magnesium oxide, magnesium ion requires only one oxygen ion because of the
- valency of oxygen is −1
- valency of Oxygen is −2
- valency of magnesium is +1
- none of above
b
O Level Chemistry App & e-Book Tests PDF Download
Chemical Equations Test 412
Mineral Acids and General Properties Test 413
Redox Reaction and Oxidation Test 414
Mass Volume Time and Temperature Test 415
Salts and Hydrogen of Acids Test 416
Dry Cells Test 417
Basic Acidic Neutral and Amphoteric Test 418
Chemical Symbols Test 419
Electrolyte and Non Electrolyte Test 420
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O Level Chemistry MCQs eBook Download
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