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IGCSE O Level Chemistry MCQs – Practice Test 9 (Chapter 4)

Electricity and Chemistry MCQs with Answers PDF Download – Test 9

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Free Electricity and Chemistry Learning App Download: What is correct about the electrode?; MCQ with answers: it is a plate which carried electricity into the liquid, it is a substance which conducts electricity but remains unchanged chemically, and it is a fully ionized liquid that undergoes electrolysis. Solve Collection of Gases Quiz Questions, download Google e-Book (Free Chapter) to access virtual chemistry.

Electricity & Chemistry MCQs with Answers PDF Download: MCQ Quiz 9

MCQ 41: Aqueous Sulfuric Acid (H2SO4(aq)) contains:

  1. Hydrogen ions
  2. hydro oxide ions
  3. sulfate ions
  4. all of above

MCQ 42: What is correct about the electrode?

  1. it is a substance which conducts electricity but remains unchanged chemically
  2. it is a plate which carried electricity into the liquid
  3. it is a fully ionized liquid that undergoes electrolysis
  4. none of above

MCQ 43: Duration of bright-bulb can be enhanced, if along with copper:

  1. magnesium is used
  2. the acid is more dilute
  3. zinc
  4. graphite

MCQ 44: In the electrolysis of concentrated HCl, Cl2 is given off at cathode due to:

  1. high concentration hydroxide ions
  2. low concentration of chloride ions
  3. high concentration of Chloride ions
  4. none of above

MCQ 45: In a dry cell, leaking occurs because:

  1. zinc electrode has dissolved away
  2. carbon electrode has dissolved away
  3. manganese oxide has been used up
  4. polarization cannot more be prevented at carbon electrode

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