Other questions in this quiz

2. The following statements are true about exothermic reactions except

  • the energy content of the products is lower than that of the reactants.
  • the reaction release heat to the surrounding
  • the formation of bond releases more energy than is required in the bond breaking
  • the formation of bond releases less energy than is required in the bond breaking

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. What is the volume of oxygen gas used if 5.5 g of propane is completely burnt in air? Molar Volume: 24 dm3 per mol (Tip: Write down the equation)

  • 3.0dm^3
  • 30.0dm^3
  • 15.0dm^3
  • 9.0dm^3

5. Propene undergoes complete combustion in excess air. Which of the following are the products formed?

  • Water and carbon dioxide
  • Hydrogen and carbon monoxide
  • Hydrogen and carbon dioxide
  • Water and carbon monoxide

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