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Acids Bases and...

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  • Question 1
    1 / -0

    In an experiment to test the pH of a given sample using pH paper, four students recorded the following observations :

    Sample takenpH paper colour turned to
    I. WaterBlue
    II. Dilute HClRed
    III. Dulite NaOHBlue
    IV. Dilute Ethanoic acidOrange
    Which one of the above observations is incorrect.

  • Question 2
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    $$X+H_2O\rightarrow Y$$. 

    $$Y$$ is used to remove grease stains from woollen clothes. Identify $$X$$ and $$Y$$.

  • Question 3
    1 / -0

    Antacids contain ___________.

  • Question 4
    1 / -0

    Which of the following is a property of a base ?

  • Question 5
    1 / -0

    Which one of the following types of medicines is for treating indigestion ? 

  • Question 6
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    On washing with soap, a turmeric stain on the cloth turns to red because
    A. soap solution is alkaline.
    B. soap solution is acidic.
    C. turmeric contains a natural indicator.
    D. turmeric contain litmus.
    Select the correct alternative.

  • Question 7
    1 / -0

    Acids are:

  • Question 8
    1 / -0

    The two kinds of litmus paper are:

  • Question 9
    1 / -0

    Directions For Questions

    Three different substances were taken and tested with litmus paper. The results are given below. 

    Substance/LitmusXYZ
    Red LitmusTurns blueNo changeNo change
    Blue LitmusNo changeTurns redNo change

    ...view full instructions

    What could be the substance X?

  • Question 10
    1 / -0

    The acid used in the making of vinegar is:

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