IGCSE O Level Chemistry Entrance Exam MCQs – Mock Test 125
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MCQ 621: Acid salts do not include:
MCQ 622: Oxalic acid (H2C2O4) is found in:
MCQ 623: Flour mills and coal mines need to be well ventilated because:
MCQ 624: Formula of Zinc Chloride (ZnCl2) indicates that charge on Zinc ion (Zn+2) is:
MCQ 625: Distilled water may also be called as:
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