Other questions in this quiz

2. Which of the following substances are the most suitable for the preparation of lead(II) sulphate salt?

  • Solid lead(II) oxide and sodium sulphate
  • Solid lead(II) carbonate and potassium sulphate
  • Lead(II) nitrate solution and potassium sulphate solution
  • Solid lead(II) nitrate and calcium sulphate

3. Which of the following pairs of additive in detergent and its function is correct?

  • Sodium sulphate - To soften the water
  • Sodium tripoliphosphate - To enable detergent to be poured easily
  • Sodium perborate - To convert stains into colourless substances
  • Sodium silicate - To remove protein stain

4. Which of the following pairs of ion has the same of number of electrons?

  • Cl- and F-
  • Na+ and Li+
  • Ca2+ and Mg2+
  • Mg2+ and O2-

5. Orange Juice - Ingredients: Sulphur dioxide, ascorbic acid, octyl ethanoate, tartrazine - Which of the following is used as a colouring?

  • Ascorbic acid
  • Sulphur dioxide
  • Tartrazine
  • Octyl ethanoate

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