O Level Chemistry e-Book's MCQs - Complete
Proton and Nucleon Number Quiz App & e-Book PDF Download - 61
Apps:
MCQ 61:
If the nucleon (mass) and proton (atomic) number is 40 and 20 respectively, the element is
- chlorine
- phosphorus
- potassium
- calcium
d
O Level Chemistry App & e-Book Tests PDF Download
Salts and Hydrogen of Acids Test 72
Methods of Purification and Sublimation Test 73
Strong and Weak Acids Test 74
Chemical Symbols Test 75
pH Scale and Acid and Alkali Test 76
Properties and Bases and Reactions Test 77
Ionic Compounds and Crystal Lattices Test 78
Kinetic Theory Test 79
Redox Reactions Test 80
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O Level Chemistry MCQs eBook Download
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