Base and Alkalies Quiz
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Questions and Answers

Which of the following is a characteristic of bases?

  • Sweet taste and grainy texture
  • Salty taste and rough texture
  • Sour taste and slimy texture
  • Bitter taste and soapy feel (correct)

    • Which of the following substances is both a base and an alkali?

  • Ammonium hydroxide
  • Aluminium hydroxide
  • Sodium hydroxide (correct)
  • Potassium hydroxide

    • Which of the following is a weak base?

  • Sodium hydroxide (NaOH)
  • Copper hydroxide (Cu(OH)2)
  • Potassium hydroxide (KOH)
  • Ammonium hydroxide (NH4 OH) (correct)

    • What is the purpose of an indicator in identifying acids and bases?

    <p>To show different colors in acidic and basic mediums</p> Signup and view all the answers

    What color does litmus turn in a basic medium?

    <p>Blue</p> Signup and view all the answers

    Which of the following is a characteristic of strong bases?

    <p>They are highly reactive with acids</p> Signup and view all the answers

    What color does litmus turn in an acidic medium?

    <p>Red</p> Signup and view all the answers

    What is the purpose of an indicator in identifying acids and bases?

    <p>To show different colors in acidic and basic mediums</p> Signup and view all the answers

    Which of the following substances is a weak base?

    <p>Aluminium hydroxide (Al(OH)3 )</p> Signup and view all the answers

    Which of the following bases is also termed as an alkali due to its solubility in water?

    <p>Sodium hydroxide (NaOH)</p> Signup and view all the answers

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