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IGCSE O Level Chemistry Exam Prep MCQs – Mock Test 132

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Study Valency and Chemical Formula MCQ with Answers PDF for chemistry digital academic support. Download the Valency and Chemical Formula Multiple Choice Questions (MCQs) PDF e-Book, Ch. 3-132 to study IGCSE O Level Chemistry Practice Tests. Learn Chemical Formulae and Equations Test PDF, Valency and Chemical Formula Multiple Choice Questions (MCQ Quiz) to strengthen chemistry engagement. Download the Valency and Chemical Formula MCQs App: Free IGCSE O Level Chemistry Learning App to study valency and chemical formula, save energy: o level chemistry, protons, neutrons and electrons test prep for chemistry digital academic support.

Free Valency & Chemical Formula MCQs App Download (Android & iOS): "Chemical formula of Magnesium Carbonate is"; MCQ with answers: mgco3, mgco3. h2o, mg3co3, and mg2co3. Practice Chemical Formulae and Equations Questions and Answers, Google e-Book to download free chapter for chemistry digital academic support.

Valency & Chemical Formula MCQ – Mock Test 132 PDF Download

MCQ 656: The chemical formula of Magnesium Carbonate is:

  1. MgCO3. H2O
  2. MgCO3
  3. Mg2CO3
  4. Mg3CO3

MCQ 657: The word LPG stands for:

  1. liquefied purified gas
  2. liquefied patrol gas
  3. liquefied petroleum gas
  4. latent petroleum gas

MCQ 658: Helium (He) is not an inert gas because it has:

  1. higher chemical reactivity only
  2. half shell of valence electrons only
  3. no electrons
  4. higher chemical reactivity and half shell of valence electrons

MCQ 659: Carbon-12 is chosen as the standard atom because:

  1. it is found in most organic compounds
  2. it is decomposable in nature
  3. mass of 12 units has been measured very accurately
  4. Carbon is the most common element

MCQ 660: If the valency of both Calcium and Sulphate ion is 2, the formula of calcium sulfate will be:

  1. CaSO3
  2. CaSO4
  3. Ca2(SO4)2
  4. Ca2SO4

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