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Atoms and molecules

Quiz by Megala Hariprasad

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13 questions
Show answers
  • Q1
    1 u or 1 amu means
    Mass of O-16 atom
    Mass of C-12 atom
    1/12th mass of C-12 atoms
    Mass of Hydrogen molecule
    30s
  • Q2
    An element X is divalent and another element Y is tetravalent. The compound formed by these two elements will be
    XY2
    XY4
    XY
    X2Y
    30s
  • Q3
    The correct symbol for silver is
    Al
    Au
    Ag
    S
    30s
  • Q4
    Adding electrons to an atom will result in a (an)
    Salt
    Cation
    Molecule
    Anion
    30s
  • Q5
    A group of atoms chemically bonded together is a (an)
    ion
    elements
    Molecule
    salt
    30s
  • Q6
    The law of definite proportions was given by
    Humphry davy
    Michael Faraday
    John Dalton
    Proust
    30s
  • Q7
    All noble gas molecules are
    diatomic
    none of the above
    polyatomic
    Monoatomic
    30s
  • Q8
    Law of chemical combination says
    The total mass of reactants equals the total mass of products
    Both a and b
    A found always has its constituent in fixed proportion
    A reaction happen only if there is liberation of energy
    30s
  • Q9
    Carbon dioxide in air and the carbon dioxide dissolved in water, both contain carbon and oxygen in ratio of 12:32 gram. This shows
    Law of conservation of mass
    Law of combination
    Law of conservation of energy
    Law of constant proportion
    30s
  • Q10
    Pick up the statement which does not belong to Dalton theory
    Atoms of an element are identical alays
    Atoms combine in whole number rato with other atom
    All compounds are made up of atoms
    Atoms reacts as per their valence electrons
    30s
  • Q11
    Which Subatomic particle(s) have a mass of 1 amu?
    electron
    proton and electron
    proton
    proton and neturon
    30s
  • Q12
    Look at the chart above, which two atoms have the same mass?
    Question Image
    Atoms 1 & 4
    atoms 1&3
    atoms 2&3
    atoms 1&2
    30s
  • Q13
    Look at the chart above, which two atoms are isotopes of another?
    Question Image
    atoms 1&2
    atoms 1&3
    atoms 1&4
    atoms 2&3
    60s

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