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IGCSE O Level Chemistry MCQs – Mock Test 38

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Download the "Chemical Symbols Study" App (iOS & Android): Formula of aluminum sulfate indicates that for; MCQ with answers: each ion of al, three ions of sulphate are required, each ion of al, two ions of sulphate are required, two ions of al, three ions of sulphate are required, and two ions of al, 3 ions of sulphate are required. Practice Chemical Formulae and Equations Questions and Answers, Google Book to download free chapter for chemistry digital educational planning.

Chemical Symbols MCQs – Mock Test 38 PDF Download

MCQ 186: The formula of aluminum sulfate indicates that for:

  1. each ion of Al, two ions of sulphate are required
  2. each ion of Al, three ions of sulphate are required
  3. two ions of Al, 3 ions of sulphate are required
  4. two ions of Al, three ions of sulphate are required

MCQ 187: Elements with full outermost shells are:

  1. metals
  2. non-metals
  3. inert gases
  4. neutral oxides

MCQ 188: Insect bites and stinging nettles contain:

  1. formic acid
  2. tartaric acid
  3. oxalic acid
  4. malic acid

MCQ 189: All of these ions have a valency of +2 except:

  1. Pb
  2. Ca
  3. Zn
  4. NH4

MCQ 190: A water molecule will always contain:

  1. 11% of oxygen and 89% of hydrogen
  2. 18% of oxygen and 88% of hydrogen
  3. 11.11% of oxygen and 88.89% of hydrogen
  4. 15% of oxygen

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