Banking Chemistry Structure of Atom / परमाणु संरचना Question Bank

done Structure of Atom Total Questions - 35

• question_answer1)
  The formation of \[S{{O}_{2}}\] and \[S{{O}_{3}}\] explain
  A)
   the law of conservation of mass   done clear
  B)
   the law of multiple proportions done clear
  C)
   the law of definite properties done clear
  D)
   Boyle's law done clear
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• question_answer2)
  One gram of which of the following contains largest number of oxygen atoms?
  A)
   \[O\]                             done clear
  B)
   \[{{O}_{2}}\] done clear
  C)
   \[{{O}_{3}}\]                     done clear
  D)
          All contains same done clear
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• question_answer3)
  The law of definite proportions was given by -
  A)
   John Dalton                  done clear
  B)
   Humphrey Davy done clear
  C)
   Proust                done clear
  D)
          Michael Faraday done clear
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• question_answer4)
  Molecular mass is defined as the
  A)
   mass of one atom compared with the mass of one molecule done clear
  B)
   mass of one atom compared with the mass of one atom of hydrogen done clear
  C)
   mass of one molecule of any substance compared with the mass of one atom of C-12   done clear
  D)
   None of these done clear
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• question_answer5)
  The chemical symbol for barium is
  A)
   B                     done clear
  B)
   Ba   done clear
  C)
   Be                  done clear
  D)
          Bi done clear
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• question_answer6)
  A group of atoms chemically bonded together is a (an)
  A)
   molecule                         done clear
  B)
   ion done clear
  C)
   salt                  done clear
  D)
          element done clear
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• question_answer7)
  Adding electrons to an atom will result in a (an)
  A)
   molecule                       done clear
  B)
   anion   done clear
  C)
   cation                done clear
  D)
          salt done clear
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• question_answer8)
  When an atom loses electrons, it is called a (an) _____ and has a ____ charge.
  A)
   anion, positive               done clear
  B)
   cation, positive   done clear
  C)
   anion, negative              done clear
  D)
   cation, positive done clear
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• question_answer9)
  The molecular formula \[{{P}_{2}}{{O}_{5}}\] means that
  A)
   a molecule contains 2 atoms of P and 5 atoms of O   done clear
  B)
   the ratio of the mass of P to the mass of O in the molecule is 2 : 5 done clear
  C)
   there are twice as many P atoms in the molecule as there are 0 atoms done clear
  D)
   the ratio of the mass of P to the mass of O in the molecule is 5 : 2 done clear
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• question_answer10)
  The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. The illustrate the law of
  A)
   constant proportions   done clear
  B)
   conservation of mass done clear
  C)
   multiple proportions   done clear
  D)
   reciprocal proportions done clear
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• question_answer11)
  The total number of atoms represented by the compound \[CuS{{o}_{4}}.5{{H}_{2}}o\]is
  A)
   27                                done clear
  B)
   21   done clear
  C)
   5                                 done clear
  D)
   8 done clear
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• question_answer12)
  The correct symbol for silver is
  A)
   Ag                    done clear
  B)
   Si done clear
  C)
   Ar                   done clear
  D)
          Al done clear
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• question_answer13)
  The cathode ray experiment was done for the first time by
  A)
   J. J. Thomson                 done clear
  B)
   John Dalton done clear
  C)
   Goldstein                      done clear
  D)
   Rutherford done clear
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• question_answer14)
  The nucleus of an atom contains
  A)
   protons                         done clear
  B)
   electrons done clear
  C)
   protons and neutrons   done clear
  D)
   neutrons done clear
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• question_answer15)
  By whom was neutron discovered?
  A)
   Bohr                            done clear
  B)
   Chadwick   done clear
  C)
   Rutherford           done clear
  D)
          Dalton done clear
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• question_answer16)
  In an atom valence electron are present in
  A)
   outermost orbit                done clear
  B)
   next to outermost orbit done clear
  C)
   first orbit             done clear
  D)
   any one of its orbit done clear
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• question_answer17)
  Which of the following statements is incorrect for cathode rays?
  A)
   They move in straight line done clear
  B)
   Their nature depends upon the nature of gas present in the discharge tube.   done clear
  C)
   They cost shadow of solid objects placed in their path done clear
  D)
   They get deflected towards positive charge. done clear
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• question_answer18)
  The isotopes of an element have
  A)
   same number of neutrons done clear
  B)
   same atomic number   done clear
  C)
   same mass number done clear
  D)
   None of these done clear
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• question_answer19)
  Which of the following pairs are isotopes?
  A)
   Oxygen and ozone done clear
  B)
   Ice and steam done clear
  C)
   Nitric oxide and nitrogen dioxide done clear
  D)
   Hydrogen and deuterium   done clear
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• question_answer20)
  Which of the following have equal number of neutrons and protons?
  A)
   Hydrogen                      done clear
  B)
   Deuterium   done clear
  C)
   Fluorine                        done clear
  D)
   Chlorine done clear
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• question_answer21)
  The number of electron in an element with atomic number X and atomic mass Y will be
  A)
   (X - Y)                          done clear
  B)
   (Y - X) done clear
  C)
   (X+Y)              done clear
  D)
          X   done clear
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• question_answer22)
  Which of the following has a charge of+1 and a mass of 1 amu?
  A)
   A neutron                                 done clear
  B)
   A proton   done clear
  C)
   An electron          done clear
  D)
          A helium nucleus done clear
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• question_answer23)
  Which of the following describes an isotope with a mass number of 99 that contains 56 neutrons in its nucleus?
  A)
   \[_{56}^{99}Ba\]                    done clear
  B)
   \[_{56}^{43}Ba\] done clear
  C)
   \[_{43}^{99}Tc\]                       done clear
  D)
   \[_{43}^{56}Tc\] done clear
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• question_answer24)
  Which of the following isotopes is used as the standard for atomic mass?
  A)
   \[^{12}C\]                     done clear
  B)
   \[^{16}O\] done clear
  C)
   \[^{13}C\]                   done clear
  D)
   \[^{1}H\] done clear
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• question_answer25)
  Which of the following is not a basic particle of an element?
  A)
   An atom                       done clear
  B)
   A molecule   done clear
  C)
   Anion              done clear
  D)
          None of these done clear
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• question_answer26)
  Members of which of the following have similar chemical properties?
  A)
   Isotope done clear
  B)
   Isobars done clear
  C)
   Allotropes   done clear
  D)
   Both isotopes and allotropes done clear
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• question_answer27)
  While performing cathode ray experiments, it was observed that there was no passage of electric current under normal conditions. Which of the following can account for this observation?
  A)
   Dust particles are present in air done clear
  B)
   Carbon dioxide is present in air done clear
  C)
   Air is a poor conductor of electricity under normal conditions   done clear
  D)
   None of these done clear
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• question_answer28)
  Which one of the following statement is not true?
  A)
   Most of the space in an atom is empty done clear
  B)
   The total number of neutrons and protons is always equal in a neutral atom   done clear
  C)
   The total number of electrons and protons in an atom is always equal done clear
  D)
   The total number of electrons in any energy level can be calculated by the formula \[2{{n}^{2}}\] done clear
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• question_answer29)
  Dalton's atomic theory successfully explained (i)  Law of conservation of mass (ii) Law of constant composition (iii) Law of radioactivity (iv) Law of multiple proportion
  A)
   (ii), (ii) and (iii)               done clear
  B)
   (i), (iii) and (iv) done clear
  C)
   (ii), (iii) and (iv)              done clear
  D)
   (i), (ii) and (iv)   done clear
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• question_answer30)
  Which one of the following laws explains the formation of carbon monoxide and carbon dioxide from carbon and oxygen?
  A)
   Law of conservation of mass done clear
  B)
   Law of multiple proportions   done clear
  C)
   Law of reciprocal proportions done clear
  D)
   Law of difinite proportions done clear
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• question_answer31)
   The atomic weights are expressed in terms of atomic mass unit. Which one of the following is used as a standard?
  A)
   \[^{1}{{H}_{1}}\]                 done clear
  B)
   \[^{12}{{C}_{6}}\],   done clear
  C)
   \[^{16}{{O}_{8}}\],                done clear
  D)
          \[^{35}C{{l}_{17}}\] done clear
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• question_answer32)
  Which would be the electrical charge on a sulphur atom containing 18 electrons?
  A)
   \[2-\]                              done clear
  B)
   \[1-\] done clear
  C)
   \[0\]                    done clear
  D)
          \[2+\] done clear
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• question_answer33)
  The atomic number of an element is 11 and its mass number is 23. The correct order representing the number of electrons, protons and neutrons respectively in this atom is
  A)
   11, 11, 12                       done clear
  B)
   11, 12, 11 done clear
  C)
   12, 11, 11            done clear
  D)
         23, 11, 23. done clear
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• question_answer34)
  In an atom valence electron are present in
  A)
   outermost orbit         done clear
  B)
   next to outermost orbit done clear
  C)
   first orbit             done clear
  D)
   any one of its orbit done clear
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• question_answer35)
  In a chemical change the total weight of the reacting substances compared to total weight of products is
  A)
   never the same              done clear
  B)
   always less done clear
  C)
   always more                  done clear
  D)
   always the same   done clear
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