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Chemical Reactions and Equations Test - 5

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Chemical Reactions and Equations Test - 5
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Weekly Quiz Competition
  • Question 1
    1 / -0

    A substance which gets oxidised in a redox reaction is a

    Solution

    A substance which gains oxygen or loses hydrogen is said to be oxidized and a reducing agent is a substance which loses electrons and is oxidised in a chemical reaction.

     

  • Question 2
    1 / -0

    2 AgCl → 2 Ag + Cl2 This reaction is an example of

    Solution

    Since decomposition of silver chloride takes place in the presence of sunlight, so it is a photolytic decomposition reaction.

     

  • Question 3
    1 / -0

    Which of the following metal comes below copper in reactivity series?

    Solution

    The other three metals are more reactive than copper.

     

  • Question 4
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    CaO + H2O → Ca(OH)2 is an example of a

    Solution

    This reaction is a combination reaction as calcium oxide and water combines to form single product that is calcium hydroxide.

     

  • Question 5
    1 / -0

    The reaction between lead nitrate and potassium iodide is an example of

    Solution

    Lead nitrate reacts with Potassium iodide to form Lead iodide and Potassium nitrate.

    Pb(NO3)2 + 2KI → PbI2 + 2KNO3

     

  • Question 6
    1 / -0

    The rusting of iron is an example of

    Solution

    Rusting of iron is a redox reaction.

    During rusting, iron combines with oxygen in the presence water. This is an oxidation reaction where oxygen acts as an oxidising agent.

    Since oxygen also combines with the metal iron, this is a reduction reaction, where the metal iron acts as a reducing agent.

     

  • Question 7
    1 / -0

    In a given reaction, barium hydroxide reacts with ammonium chloride to form product X and Y. Identify X and Y.

    Ba(OH)2 + NH4Cl → X + Y

    Solution

    The product X and Y are barium chloride and ammonium hydroxide respectively.

    Ba(OH)2 + NH4Cl → BaCl2 + NH4OH

     

  • Question 8
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    Which of the  following feature is common to both physical and chemical change?

    Solution

    In both physical and chemical change, there can be a change in state and colour.

     

  • Question 9
    1 / -0

    Reaction between Ammonium chloride and Barium hydroxide is

    Solution

    Reaction between Ammonium chloride and Barium hydroxide is an endothermic reaction.

     

  • Question 10
    1 / -0

    Corrosion in case of iron is known as

    Solution

    Corrosion in case of iron is known as rusting.

     

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