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Chemistry Test - 21

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Chemistry Test - 21
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Which of the following byproduct is released when an ester reacts with alcohol?

    Solution

    The reaction is given by-

    ─COOR1 + R2OH ↔ ─COOR2 + R1OH

    Thus, the byproduct is alcohol.

  • Question 2
    1 / -0

    Fundamental unit for the length in metric system is

    Solution

    Fundamental unit for the length in metric system is meter (m).

  • Question 3
    1 / -0

    Atoms undergo bonding in order to ?

    Solution

    Atoms undergo bonding to attain stable electronic configuration and to gain energy.

  • Question 4
    1 / -0

    Which of the byproduct molecule is released in the formation of polyurea?

    Solution

    There is no byproduct elimination in this reaction.

    Formation of urea-

    ─N═C═O + H2N─ ↔ ─NHCO─NH─

    Formation of polyurea-

    nOCRNCO + n H2NR’NH2 ↔ OCN─[─RNHCO─HNR’NHCONH]n-1─RNHCONHR’NH2.

  • Question 5
    1 / -0

    Which among the following is not a property of Ionic bond?

    Solution

    Ionic bond results from a), b) and d). But the transfer of electrons is a property of Covalent bond.

  • Question 6
    1 / -0

    Potassium Ion K+ has the same electronic configuration as that of which noble gases mentioned below ?

    Solution

    Potassium has atomic number 19, hence it has 19 electrons and therefore K+ has 18 electrons, which is the same as noble gas Argon.

  • Question 7
    1 / -0

    __________ are statements of equivalent values of different units in the form of ratios.

    Solution

    Conversion factor are statements of equivalent values of different units in the form of ratios.

  • Question 8
    1 / -0

    The Pascal (Pa) unit of pressure can be written as:

    Solution

    The Pascal (Pa) unit of pressure is Force/Area.

  • Question 9
    1 / -0

    Which among the following is both a molecule and a compound?

    Solution

    Water H2O is both a molecule and a compound. This is because the atoms which make them are not the same.

  • Question 10
    1 / -0

    What is the hybridization of oxygen in water?

    Solution

    water has a linear shape as hydrogen shares its electron with p-orbital.

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