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Chemical Reacti...

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  • Question 1
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    Which of the following is a chemical change?

  • Question 2
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    What will happen if temperature of 1 kg of water is raised from 30o to 140oC?

    I. There will be a change in the physical state of the substance.
    II. It goes through a chemical change.
    III. All the heat supplied does not contribute to the temperature rise.
    IV. The boiling point of water will depend on the atmospheric pressure.

  • Question 3
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    Chemical change does not take place in case of

  • Question 4
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    Which of the following represents a chemical change?

  • Question 5
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    Which of the following processes causes a chemical change?

  • Question 6
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    What is generally affected in a chemical change?

  • Question 7
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    Which of the following is a reduction reaction?

  • Question 8
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    In the ordinary fire extinguisher, carbon dioxide is generated by the reaction of

  • Question 9
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    When a small amount of manganese dioxide is added to hydrogen peroxide, oxygen is evolved. This is an example of

  • Question 10
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    Which of the following is an example of photolysis reaction?

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