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Atoms Test - 19...

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  • Question 1
    1 / -0

    An element X has mass number 10, and number of neutrons = 7. Then what will be the number of proton?

  • Question 2
    1 / -0

    The lamp whose working is based on a discharge tube is ________ .

  • Question 3
    1 / -0

    The fluorescence of the glass (discharge) tube at very low pressure is characteristic of ________ .

  • Question 4
    1 / -0

    An element has number of electrons  = 2. Then what will be its atomic number?.

  • Question 5
    1 / -0

    A modified discharge tube is used as a ________ .

  • Question 6
    1 / -0

    If an element has 22 electrons then what will be its atomic number?

  • Question 7
    1 / -0

    If an element X has mass number and number of proton 8 then identify element X 

  • Question 8
    1 / -0

    An element necessarily have same

  • Question 9
    1 / -0

    Choose the wrong statement:

  • Question 10
    1 / -0

    Smallest particle in a chemical element or compound that has the chemical properties of that element or compound is

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