Index
FIND BOOK SOLUTIONS

IMPORTANT QUESTIONS

  1. What are the advantages of using CNG and LPG as fuels?
  2. One day Reeta went to a jeweller’s shop with her mother. Her mother gave old gold jewellery to the goldsmith to polish. The next day when they brought the jewellery back, they found that there was a slight loss in its weight. Can you suggest a reason for the loss of weight?
  3. Saloni took a piece of burning charcoal and collected the gas evolved in a test tube. (a) How will she find the nature of the gas? (b) Write down word equations of all the reactions taking place in this process.
  4. What happens when (a) Dilute sulphuric acid is poured on a copper plate? (b) Iron nails are placed in copper sulphate solution? Write word equations of the reactions involved.
  5. Can you store the lemon pickle in an aluminium utensil? Explain.
  6. Give reasons for the following. (a) Aluminium foils are used to wrap food items. (b) Immersion rods for heating liquids are made up of metallic substances. (c) Copper cannot displace zinc from its salt solution. (d) Sodium and potassium are stored in kerosene.
  7. Mark ‘T’ if the statement is true and ‘F’ if it is false. (d) Coal can be drawn into wires.
  8. Mark ‘T’ if the statement is true and ‘F’ if it is false. (c) Copper displaces zinc from zinc sulphate solution.
  9. Mark ‘T’ if the statement is true and ‘F’ if it is false. (b) Sodium is a very reactive metal.
  10. Mark ‘T’ if the statement is true and ‘F’ if it is false. Generally, non-metals react with acids.
Topics
  1. Describe the circumstances leading to the outbreak of revolutionary protest in France.
  2. Describe the circumstances leading to the outbreak of revolutionary protest in France.
  3. Describe the circumstances leading to the outbreak of revolutionary protest in France.
  4. Describe the circumstances leading to the outbreak of revolutionary protest in France.
  5. Describe the circumstances leading to the outbreak of revolutionary protest in France.
  6. Describe the circumstances leading to the outbreak of revolutionary protest in France.
  7. Describe the circumstances leading to the outbreak of revolutionary protest in France.