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IGCSE A Level Chemistry Practice Test 55

Ionic Bonds and Covalent Bonds Quiz PDF: Questions and Answers - 55

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Ionic Bonds & Covalent Bonds Questions and Answers PDF Download: Quiz 55

MCQ 271: In ammonium ion, the electrons required between hydrogen ion and nitrogen ion are

  1. 1
  2. 2
  3. 3
  4. 4

MCQ 272: The atomic number of Strontium (Sr) is

  1. 12
  2. 38
  3. 20
  4. 56

MCQ 273: One of the oxides that do not react with water is

  1. MgO
  2. Al2(SO4)3
  3. SiO2
  4. Na2O

MCQ 274: The by-products of reaction MgCl2 + H2O, if HCl is allowed to react, will be

  1. MgO(s) only
  2. Mg(OH)2(s) only
  3. HMgO2(s)
  4. MgO(s) and Mg(OH)2(s)

MCQ 275: In a free radical reaction, the free radicals are formed at

  1. initiation step only
  2. propagation step only
  3. termination step
  4. initiation and propagation step

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