Science

9th -

Professional Development

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MCQ TRAINING

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13 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt
    Some crystals of copper sulphate were dissolved in water. The color of the solution obtained would be
    green
    red
    blue
    brown.
  • 2. Multiple Choice
    30 seconds
    1 pt
    What happens when dilute hydrochloric acid is added to iron filling? Tick the correct answer
    (a) Hydrogen gas and iron chloride are produced.
    (b) Chlorine gas and iron hydroxide are produced
    (c) No reaction takes place
    (d) Iron salt and water are produced
  • 3. Multiple Choice
    30 seconds
    1 pt
    Chemically rust is
    Hydrated ferrous oxide
    hydrated ferric oxide
    only ferric oxide
    none of these
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