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Acids Bases and Salts Test - 5

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Acids Bases and Salts Test - 5
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Which of the following is an example of a neutral oxide?

    Solution

    Carbon monoxide shows neither acidic nor basic behaviour, so it is a neutral oxide.

     

  • Question 2
    1 / -0

    Which of the following property is not shown by acids?

    Solution

    Bases dissociate in water to give OH- ions and acids dissociate in water to give H+ ions.

     

  • Question 3
    1 / -0

    What products are formed when iron (Fe) reacts with dilute hydrochloric acid (HCl)?

    Solution

    Fe + 2HCl → FeCl2 + H2

     

  • Question 4
    1 / -0

    Which of the following compound is used in soda-acid fire extinguishers?

    Solution

    Baking soda is used in soda-acid fire extinguisher.

     

  • Question 5
    1 / -0

    Four student (a), (b), (c) and (d) measured the pH values of water, lemon juice and sodium bicarbonate solution. What is the correct decreasing order of pH values?

    Solution

    Sodium bicarbonate > water > lemon juice is the correct decreasing order of pH values.

     

  • Question 6
    1 / -0

    Tomato juice will have a pH

    Solution

    Oxalic acid is present in tomato so, it will have a pH value 4.1.

     

  • Question 7
    1 / -0

    Marble chips react with a solution to produce a gas which turns lime water milky. So the solution contains

    Solution

    Calcium carbonate reacts with sulphuric acid to form calcium sulphate and carbon dioxide which turns lime water milky.

    CaCO3 + H2SO4 → CaSO4 + CO2 + H2O

     

  • Question 8
    1 / -0

    A natural source of lactic acid is

    Solution

    Lactic acid is present in curd.

     

  • Question 9
    1 / -0

    On heating gypsum at 373 K, we obtain

    Solution

    On heating gypsum it loses one and a half molecules of water and forms calcium sulphate hemihydrate also known as plaster of Paris.

     

  • Question 10
    1 / -0

    Bee-sting contains

    Solution

    Bee-sting contains methanoic acid.

     

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