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IGCSE A Level Chemistry MCQs – Practice Test 26 (Chapter 22)

Periodicity MCQ with Answers PDF Download – Test 26

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Download the Periodicity Study App (iOS & Android): Oxidation number of P in PCl5 is; MCQ with answers: +3, +2, +4, and Ƴ. Practice Oxidation Numbers Quiz Questions, download Apple Book (Free Chapter) to enhance chemistry online productivity.

Periodicity MCQ with Answers PDF Download: Quiz 26

MCQ 126: The electrical insulator among the four compounds provided below is:

  1. Na2O
  2. MgO
  3. Al2O3
  4. SO2

MCQ 127: The oxidation number of P in PCl5 is:

  1. +2
  2. +3
  3. +4
  4. +5

MCQ 128: +7 is the oxidation number of:

  1. Mg
  2. Al
  3. Ar
  4. Cl

MCQ 129: Aluminum oxide acts as a base when it reacts with:

  1. water
  2. alkali
  3. acid
  4. base

MCQ 130: With purely ionic bonding, the oxides of metal sodium and magnesium produce with water the:

  1. alkali solutions
  2. acidic solutions
  3. basic solutions
  4. noble gases

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