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IGCSE O Level Chemistry MCQs – Mock Test 150

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Download the "Protons Neutrons & Electrons Learning" App (Android & iOS): Nucleon number of an element is equal to the; MCQ with answers: number of protons, mass number of an element, number of electrons, and atomic number. Practice Structure of Atom Questions and Answers, Google Book to download free chapter to improve chemistry online completion.

Protons Neutrons & Electrons MCQs – Mock Test 150 PDF Download

MCQ 746: Nucleon number of an element is equal to the:

  1. mass number of an element
  2. number of protons
  3. atomic number
  4. number of electrons

MCQ 747: Al2O3 + NaOH + H2O →:

  1. NaClH3O4 (s)
  2. NaAl(OH)4 (aq)
  3. NaAl(OH)4 (s)
  4. NaClH3O4 (aq)

MCQ 748: Relative atomic mass of 3O3 is:

  1. 48
  2. 140
  3. 180
  4. 320

MCQ 749: The formula of potassium sulfate is:

  1. KSO3
  2. KSO4
  3. KHSO3
  4. K2SO4

MCQ 750: Electroplating of chromium helps in the manufacturing of:

  1. car bumpers
  2. saucepans
  3. cutlery
  4. watches

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