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Chemical Reacti...

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  • Question 1
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    Which of the following elements is placed in Kerosene?

  • Question 2
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    When Sodium reacts with Cl2, the molecular formula in the balanced equation is:

  • Question 3
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    Which of the following reactions is endothermic?

  • Question 4
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    Rust is chemically defined as _______.

  • Question 5
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    Nitrogen gas is used by chips manufacturers because Nitrogen is a/an _____.

  • Question 6
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    Who diagrammed the first chemical equation?

  • Question 7
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    Which of the following is the reducing agent in the reaction given below?

    Fe2O3+3CO→2Fe+3CO2

  • Question 8
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    Complete the given reaction.

    CH4+2O2→CO2+________

  • Question 9
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    What happens when dilute HCl is added to iron filings?

  • Question 10
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    Which of the following options is a physical change?

  • Question 11
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    Hydration means addition of _______.

  • Question 12
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    Photolysis is an example of:

  • Question 13
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    A solution of substance X is used for whitewashing. What is X?

  • Question 14
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    Hydrogenation means addition of:

  • Question 15
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    Fe2O3+2Al→Al2O3+2Fe

    The given reaction is a:

  • Question 16
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    AB+CD→AD+CB

    The given reaction is an example of _____.

  • Question 17
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    In a Chemical Reaction, _______ take part.

  • Question 18
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    Food items can be preserved for a longer time when kept in a refrigerator because the:

  • Question 19
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    NaCl(aq)+AgNO3(aq)→NaNO3(aq)+AgCl(s)

    The given reaction is an example of:

  • Question 20
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    _________ is a reaction in which a chemical compound undergoes a structural rearrangement without any change in its net atomic composition.

  • Question 21
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    The decomposition of CaCO3 is a/an _____ reaction.

  • Question 22
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    2Na(s) +2HCl (aq)→2NaCl(aq)+H2(g) 

    The given reaction is an example of ______.

  • Question 23
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    Magnesium ribbon is rubbed before burning because it has a coating of:

  • Question 24
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    Oxidation Reaction is a chemical process in which a substance gains:

  • Question 25
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    A balanced chemical equation has:

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