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Chemical Reacti...

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  • Question 1
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    You mix two colourless solutions and the resulting mixture becomes cloudy. What type of reaction is observed?

  • Question 2
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    Chemical volcano is an example of:

  • Question 3
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    $$C_{6}H_{12} O_{6}\rightarrow 2C_{2}H_{5}OH + 2CO_{2}$$ is a ______ reaction.

  • Question 4
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    Study the following chemical reactions.
    $$\displaystyle Fe + CuSO_4 \rightarrow FeSO_4 + Cu$$
    $$2 AgNO_3 + Cu \rightarrow Cu (NO_3)_2 + 2Ag$$

    The metals present in the reactions can be written in the increasing order of reactivity as:

  • Question 5
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    The decomposition of a certain mass of a $$CaCO_3$$ gave $$11.2\, dm^3$$ of $$CO_2$$ gas at STP. The mass of KOH required to completely neutralize the gas is:

  • Question 6
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    Precipitate in a reaction is indicated by which arrow mark?

  • Question 7
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    The mixture of carbon and sulphur is separated by using the solution of _________.

  • Question 8
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    Which of the following process involves chemical reaction?

  • Question 9
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    Which of the following is not a characteristic of a chemical reaction?

  • Question 10
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    Constituents of the compounds can be separated by

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