Collection of Gases Learning App | IGCSE O Level Chemistry Notes e-Book PDF
IGCSE O Level Chemistry MCQs (O Level) From Textbook

IGCSE O Level Chemistry Certification MCQs – Mock Test 127

Collection of Gases Notes Questions with Answers PDF Download – Test 127

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Collection of Gases MCQs – Mock Test 127 PDF Download

MCQ 631: Gases denser than air do not include:

  1. chlorine
  2. carbon dioxide
  3. hydrogen chloride
  4. ammonia

MCQ 632: Valency of iron (Fe) is:

  1. Fe+2 only
  2. Fe+3 only
  3. Fe+5
  4. Fe+2 and Fe+3

MCQ 633: Turpentine is an example of:

  1. strong electrolyte
  2. non-electrolyte
  3. weak electrolyte
  4. salt

MCQ 634: The difficulty of discharge is highest in:

  1. nitrate ions
  2. sulphate ions
  3. bromide ions
  4. chloride ions

MCQ 635: Sugar cubes dissolve more slowly in hot drink than the granulated sugar because:

  1. surface area of sugar cubes is less
  2. surface area of sugar is more
  3. sugar cubes are acidic
  4. sugar cubes are basic

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