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Atomic Structure Test - 1

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Atomic Structure Test - 1
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  • Question 1
    1 / -0

    Positively charged particle present in the atom is-

    Solution

    According to the question the correct option will be option ‘D’ because protons are the positively charged particles present in an atom.

     

  • Question 2
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    A positively charged ion in a compound is called :

    Solution

    A positively charges ion is known as cation. Eg. Na+, H+, Ca2+

     

  • Question 3
    1 / -0

    Negatively charged particle present in the atom is-

    Solution

    According to the question the correct option will be option ‘C’ because electrons are the negatively charged particles present in an atom. 

     

  • Question 4
    1 / -0

    All of these are subatomic particle except-

    Solution

    According to the question the correct option will be option ‘D’ because Positron is not a subatomic particle. Electrons, protons and neutrons are the subatomic particles.

     

  • Question 5
    1 / -0

    Not a part of the Atomic Theory is-

    Solution

    According to the question the correct option will be option ‘D’ because Main Postulates of Dalton's Atomic Theory

    1) All matter is made of atoms. Atoms are indivisible and indestructible.
    2) All atoms of a given element are identical in mass and properties
    3) Compounds are formed by a combination of two or more different kinds of atoms.
    4) A chemical reaction is a rearrangement of atoms

     

  • Question 6
    1 / -0

    the smallest particle in which matter can exist is called -

    Solution

    DALTON'S ATOMIC THEORY: According to the question the correct option will be option ‘A’ as-

    Matter is made up of very small indivisible particle called atoms.

    All the atoms of a given element is identical in all respect i.e. mass, shape, size, etc.

    Atoms cannot be created nor destroyed by any chemical process.

    Atoms of different elements are different in nature.

     

  • Question 7
    1 / -0

    The atomic theory of matter was proposed by whom-

    Solution

    According to the question the correct option will be option ‘D’ because he atomic theory of matter was proposed by John Dalton.
    John Dalton (1766-1844) developed the first useful atomic theory of matter.

     

  • Question 8
    1 / -0

    Which of the following correctly represents symbol for silver in Berzelius system?

    Solution

    Ag correctly represents symbol for silver in Berzelius system. It is derived from the name Argentum for silver.

     

  • Question 9
    1 / -0

    Atomic number refers to the number of-

    Solution

    According to the question the correct option will be option ‘B’ because Atomic number refers to the number of protons in an atom, it is denoted by the alphabet Z

     

  • Question 10
    1 / -0

    Mass number refers to the number of-

    Solution

    According to the question the correct option will be option ‘B’ because mass number is the sum of the number of protons and neutrons present in the nucleus of an atom.

     

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