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Chemistry Test 158
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Chemistry Test 158
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  • Question 1/10
    4 / -1

    The energy released in an atom bomb explosion is mainly due to

    Solutions

    Large energy released in atomic bomb explosion is mainly due to products having lesser mass than initial substance.

    The mass difference is converted to energy and is responsible for release of large amount of energy.

     

  • Question 2/10
    4 / -1

    Acetaldoxime reacts with P2O5 to produce

    Solutions

    CH3CHO + H2NOH CH3CH=N-OH

    Dehydration of CH3CH=N-OH in presence of P2O5gives CH3-CN

     

  • Question 3/10
    4 / -1

    Which one of the following elements shows the maximum number of different oxidation states in its compounds?

    Solutions

    Am shows +2, +3, +4, +5, +6, +7 oxidation states.

     

  • Question 4/10
    4 / -1

    An increase in the conductivity equivalent of a solid electrolyte with dilution is primarily due to

    Solutions

    Λeq​=k×1000/Normality

    On dilution, the number of charge carriers per m3 decreases but the volume increases. Consequently, the ionic mobility increases which increase equivalent conductance.

     

  • Question 5/10
    4 / -1

    Which of the following bond has the highest bond energy?

    Solutions

    Due to lower size and less electron-electron repulsion, S-S have highest bond energy.

     

  • Question 6/10
    4 / -1

    The volume of 20 volume H2O2 required to get 5 litres of O2 at STP is

    Solutions

     

  • Question 7/10
    4 / -1

    The electrons, identified by quantum numbers n and l (i) n = 4, l = 1 (ii) n = 4, l = 0 (iii) n = 3, l = 2 (iv) n = 3, l = 1 can be placed in order of increasing energy, from the lowest to highest, as

    Solutions

     

  • Question 8/10
    4 / -1

    According to the Periodic Law of elements, the variation in properties of elements is related to their

    Solutions

    According to modern periodic law, the properties of the elements are repeated after certain regular intervals when these elements are arranged in order of their increasing atomic numbers.

     

  • Question 9/10
    4 / -1

    Which of the following pairs of ions are isoelectronic and isostructural?

    Solutions

     

  • Question 10/10
    4 / -1

    As the temperature is raised from 20C to 40C, the average kinetic energy of neon atoms changes by a factor of which of the following?

    Solutions

     

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