IGCSE O Level Chemistry MCQs (O Level) From Textbook

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IGCSE O Level Chemistry Study Material: Practice Test 7 (Chapter 4)

Electricity and Chemistry Quiz Questions & Answers PDF Download - 7

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Electricity & Chemistry Exam Questions and Answers PDF Download: Test 7

MCQ: 31

Purpose of a voltmeter is to

  1. ensure constant flow of electricity
  2. measure amount of current
  3. measure voltage of cells and batteries
  4. help bulbs to glow
MCQ: 32

The difficulty of discharge is lowest in

  1. calcium ions
  2. sodium ions
  3. magnesium ions
  4. zinc ions
MCQ: 33

In a dry cell, the polarization is prevented through

  1. potassium hydroxide mixture
  2. ammonium nitrate mixture
  3. manganese oxide
  4. Sodium hydroxide mixture
MCQ: 34

Ethanol C2H5OH(I) is an example of

  1. strong electrolyte
  2. non-electrolyte
  3. weak electrolyte
  4. carboxylic acid
MCQ: 35

In electrolysis of dilute Hydrochloric Acid (HCl(aq)), at anode,

  1. oxygen gas is given off
  2. hydrogen gas is given off
  3. chlorine gas is given off
  4. hydrogen chloride gas is given off

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