O Level Chemistry e-Book's MCQs - Complete
Method of Purification Quiz App Download & e-Book PDF - 49
Apps:
MCQ 49:
Vacuum distillation is used in
- under high pressures
- under low pressures
- gentle heating
- quick heating
b
O Level Chemistry App & e-Book Tests PDF Download
Acids and Properties and Reactions Test 60
Proton and Nucleon Number Test 61
Chemical Symbols Test 62
Dissolving Filtering and Evaporating Test 63
Valency and Chemical Formula Test 64
Ionic and Covalent Substances Test 65
Change of State Test 66
Valency and Chemical Formula Test 67
Electrical Devices and Circuit Symbols Test 68
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O Level Chemistry MCQs eBook Download
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