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Acids Bases and...

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  • Question 1
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    A farmer treats the soil of his field with lime when the soil has:

  • Question 2
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    The $$pH$$ of an acidic solution is:

  • Question 3
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    $$pH$$ scale:

  • Question 4
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    To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is:

  • Question 5
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    Which of the following statement is correct about an aqueous solution of an acid and a base?
    (i) Higher the pH, stronger the acid.
    (ii) Higher the pH, weaker the acid. 
    (iii) Lower the pH, stronger the base. 
    (iv) Lower the pH, weaker the base. 

  • Question 6
    1 / -0

    Match the following columns.

    Column (I) Column(II)
    (1) Plaster of Paris(i) Ca(OH)$$_2$$
    (2) Gypsum (ii) CaSO$$_4$$.$$ \dfrac {1}{2}$$H$$_2$$O
    (3) Bleaching powder(iii) CaSO$$_4$$.2H$$_2$$O
    (4) Slaked lime(iv) CaOCl$$_2$$

  • Question 7
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    You have two solutions, $$A$$ and $$B$$. The $$pH$$ of solution $$A$$ is $$6$$ and $$pH$$ of solution $$B$$ is $$8$$. Which solution has more hydrogen ion concentration? Which of this acidic and which one is basic?

  • Question 8
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    Chemically baking soda is:

  • Question 9
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    Baking soda is used as _________ as it is __________.

  • Question 10
    1 / -0

    Acid reacts with metal to form:

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