JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank

done Isotopes-Isotones and Nuclear isomers Total Questions - 57

• question_answer1)
  Substances which have identical chemical properties but differ in atomic weights are called [EAMCET 1980, 83; DPMT 1985; MNR 1982]
  A)
                  Isothermals        done clear
  B)
                  Isotopes done clear
  C)
                  Isentropus          done clear
  D)
                  Elementary particles done clear
  View Solution play_arrow

• question_answer2)
  Tritium is an isotope of  [DPMT 1985]
  A)
                  Hydrogen            done clear
  B)
                  Titanium done clear
  C)
                  Tantalum             done clear
  D)
                  Tellurium done clear
  View Solution play_arrow

• question_answer3)
  O ? 18 isotope of oxygen will have           [CPMT 1972, 79]
  A)
                  18 protons done clear
  B)
                  9 protons and 9 neutrons done clear
  C)
                  8 neutrons and 10 protons done clear
  D)
                  10 neutrons and 8 protons done clear
  View Solution play_arrow

• question_answer4)
  Which of the following is an isobaric pair               [CPMT 1987, 93]
  A)
                  \[_{6}{{C}^{13}},{{\,}_{7}}{{N}^{13}}\]    done clear
  B)
                  \[_{6}{{C}^{13}},{{\,}_{7}}{{N}^{14}}\] done clear
  C)
                  \[_{7}{{N}^{14}},{{\,}_{8}}{{O}^{15}}\]   done clear
  D)
                  \[_{7}{{N}^{13}},{{\,}_{8}}{{O}^{15}}\] done clear
  View Solution play_arrow

• question_answer5)
  Isotopes are atoms having the same [EAMCET 1978, 79; MP PMT 1980; CPMT 1973;  BHU 2001; AFMC 2003]
  A)
                  Atomic mass      done clear
  B)
                  Mass number done clear
  C)
                  Atomic number done clear
  D)
                  Number of neutrons done clear
  View Solution play_arrow

• question_answer6)
  Successive emission of an \[\alpha \]-particle and two \[\beta \]-particles by an atom of an element results in the formation of its [MP PMT/PET 1988; BHU 1979]
  A)
                  Isobar   done clear
  B)
                  Isomorph done clear
  C)
                  Isotope                done clear
  D)
                  Isomer done clear
  View Solution play_arrow

• question_answer7)
  In treatment of  cancer, which of the following isotope is used   [DPMT 1985; BHU 1995; KCET 1999; AMU 1999; Pb.CET 2001; MP PET 2002; Kurukshetra CET 2002]
  A)
                  \[_{53}{{I}^{131}}\]         done clear
  B)
                  \[_{15}{{P}^{32}}\] done clear
  C)
                  \[_{27}C{{o}^{60}}\]       done clear
  D)
                  \[_{1}{{H}^{2}}\] done clear
  View Solution play_arrow

• question_answer8)
  Elements having different nuclear charge but the same mass number are called                [NCERT 1974; MP PMT 1991; CBSE PMT 1991; CPMT 1989; EAMCET 1992]
  A)
                  Isotopes              done clear
  B)
                  Isobars done clear
  C)
                  Isomers                done clear
  D)
                  Isotones done clear
  View Solution play_arrow

• question_answer9)
  Which isotope on bombardment with \[\alpha \]-particles will give \[_{8}{{O}^{17}}\] and \[_{1}{{H}^{1}}\]         [NCERT 1983]
  A)
                  \[_{8}{{O}^{16}}\]            done clear
  B)
                  \[_{7}{{N}^{14}}\] done clear
  C)
                  \[_{7}{{N}^{15}}\]            done clear
  D)
                  \[_{6}{{C}^{14}}\] done clear
  View Solution play_arrow

• question_answer10)
  Emission of \[\beta \]-particle by an atom of an element results in the formation of its   [BHU 1979; DPMT 1985; KCET 1999]
  A)
                  Isotope                done clear
  B)
                  Isomer done clear
  C)
                  Isomorph            done clear
  D)
                  Isobar done clear
  View Solution play_arrow

• question_answer11)
  Radioactive isotopes that have an excessive neutron/proton ratio generally exhibit
  A)
                  \[{{e}^{-}}\] emission     done clear
  B)
                  \[_{2}H{{e}^{4}}\] emission done clear
  C)
                  \[{{e}^{+}}\] emission    done clear
  D)
                  K -electron capture done clear
  View Solution play_arrow

• question_answer12)
  Atomic weights of carbon, nitrogen and oxygen are 12, 14 and 16 respectively. An atom of atomic weight 14 and nuclear charge + 6  is an isotope of
  A)
                  Oxygen                done clear
  B)
                  Carbon done clear
  C)
                  Nitrogen              done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer13)
  Isotopes of an element have      [MNR 1985]
  A)
                  Similar chemical properties but different physical properties done clear
  B)
                  Similar chemical and physical properties done clear
  C)
                  Similar physical properties but different chemical properties done clear
  D)
                  Different chemical and physical properties done clear
  View Solution play_arrow

• question_answer14)
  Whose number is common in isotopes  [AIIMS 1988]
  A)
                  Proton  done clear
  B)
                  Neutron done clear
  C)
                  Proton and neutron        done clear
  D)
                  Nucleon done clear
  View Solution play_arrow

• question_answer15)
  In the following radioactive transformation \[R\xrightarrow{\alpha }X\xrightarrow{\beta }Y\xrightarrow{\beta }Z\];  the nuclei \[R\] and \[Z\] are  [BHU 1987]
  A)
                  Isotopes              done clear
  B)
                  Isobars done clear
  C)
                  Isomers                done clear
  D)
                  Isotones done clear
  View Solution play_arrow

• question_answer16)
  Which one of the following pairs represents isobars [CPMT 1988]
  A)
                  \[_{2}^{3}He\]  and  \[_{2}^{4}He\] done clear
  B)
                  \[_{12}^{24}Mg\]  and  \[_{12}^{25}Mg\] done clear
  C)
                  \[_{19}^{40}K\] and  \[_{20}^{40}Ca\] done clear
  D)
                  \[_{19}^{39}K\] and  \[_{19}^{40}K\] done clear
  View Solution play_arrow

• question_answer17)
  Nuclei of isotopes differ in           [CPMT 1986, 90; MP PMT 1987]
  A)
                  The number of protons done clear
  B)
                  The number of neutrons done clear
  C)
                  The number of protons and neutrons both done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer18)
  An isotope of ?parent? is produced, when its nucleus loses [CPMT 1987; MP PET 1991]
  A)
                  One \[\alpha \]-particle done clear
  B)
                  One \[\beta \]-particle done clear
  C)
                  One \[\alpha \] and two \[\beta \]-particles done clear
  D)
                  One \[\beta \]  and two  \[\alpha \]- particles done clear
  View Solution play_arrow

• question_answer19)
  Which of the following isotopes is likely to be most stable [EAMCET 1982]
  A)
                  \[_{30}Z{{n}^{71}}\]        done clear
  B)
                  \[_{30}Z{{n}^{66}}\] done clear
  C)
                  \[_{30}Z{{n}^{64}}\]        done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer20)
  Which of the following statement is false [Manipal MEE 1995]
  A)
                  In chlorine gas, the ratio of \[C{{l}^{35}}\] and \[C{{l}^{37}}\] is 1 : 3 done clear
  B)
                  The hydrogen bomb is based on the principle of nuclear fusion done clear
  C)
                  The atom bomb is based on the principle of nuclear fission done clear
  D)
                  The penetrating power of a proton is less than that of an electron done clear
  View Solution play_arrow

• question_answer21)
  Isotones are elements having    [Bihar MEE 1996; Bihar CEE 1995]
  A)
                  Same mass number but different neutrons done clear
  B)
                  Same atomic number but different neutrons done clear
  C)
                  Same atomic number, mass number and neutrons done clear
  D)
                  Different atomic and mass number but same neutrons done clear
  View Solution play_arrow

• question_answer22)
  Isobaric atoms may contain
  A)
                  Same number of \[{{p}^{+}}\] and different number of \[{{n}^{0}}\] done clear
  B)
                  Same number of \[{{n}^{0}}\] and different number of \[{{p}^{+}}\] done clear
  C)
                  Same number of both \[{{p}^{+}}\] and \[{{n}^{0}}\] done clear
  D)
                  Different numbers of both \[{{p}^{+}}\]  and \[{{n}^{0}}\] done clear
  View Solution play_arrow

• question_answer23)
  \[_{20}{{X}^{40}}\] and \[_{21}{{X}^{40}}\] are   [CPMT 1996]
  A)
                  Isobars done clear
  B)
                  Isotopes done clear
  C)
                  Isotones              done clear
  D)
                  Isostereomers done clear
  View Solution play_arrow

• question_answer24)
  Which property is different for neutral atoms of the two isotopes of the same element                  [JIPMER 2001]
  A)
                  Number of protons         done clear
  B)
                  Atomic number done clear
  C)
                  Number of neutrons      done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer25)
  Which of the following species is isotonic with \[_{37}R{{b}^{86}}\] [BHU 2001]
  A)
                  \[_{36}K{{r}^{84}}\]        done clear
  B)
                  \[_{37}R{{b}^{85}}\] done clear
  C)
                  \[_{38}S{{r}^{87}}\]         done clear
  D)
                  \[_{39}{{Y}^{89}}\] done clear
  View Solution play_arrow

• question_answer26)
  The maximum sum of the number of neutrons and protons in an isotope of hydrogen is                 [Pb. PMT 2001]
  A)
                  4              done clear
  B)
                  5 done clear
  C)
                  6              done clear
  D)
                  3 done clear
  View Solution play_arrow

• question_answer27)
  Difference in \[_{17}C{{l}^{35}}\] and \[_{17}C{{l}^{37}}\] is of    [AFMC 2000]
  A)
                  Atomic number                done clear
  B)
                  Number of protons done clear
  C)
                  Number of neutrons      done clear
  D)
                  Number of electrons done clear
  View Solution play_arrow

• question_answer28)
  Which of the following is an isotonic pair [AMU (Engg.) 2000]
  A)
                  \[_{19}^{40}K,\,_{20}^{40}Ca\] done clear
  B)
                  \[_{19}^{39}K,\,_{20}^{40}Ca\] done clear
  C)
                  \[_{18}^{33}Ar,\,_{\,18}^{40}Ar\] done clear
  D)
                  \[_{18}^{40}Ar,\,_{\,20}^{40}Ca\] done clear
  View Solution play_arrow

• question_answer29)
  \[_{6}{{C}^{11}}\] and \[_{5}{{B}^{11}}\] are referred as                [NCERT 1978]
  A)
                  Nuclear isomers               done clear
  B)
                  Isobars done clear
  C)
                  Isotopes              done clear
  D)
                  Fission products done clear
  View Solution play_arrow

• question_answer30)
    The atomic number of bromine is 35 and its atomic weight is 79. Two isotopes of bromine are present in equal amounts. Which of the following statements represents the correct number of neutrons [NCERT 1983]                
  A)
                  First isotope 34                 Second isotope 36 done clear
  B)
                  First isotope 44                 Second isotope 46 done clear
  C)
                  First isotope 45                 Second isotope 47 done clear
  D)
                  First isotope 79                 Second isotope 81 done clear
  View Solution play_arrow

• question_answer31)
  Isotopes are those which contain             [RPMT 1997]
  A)
                  Same number of neutrons done clear
  B)
                  Same physical properties done clear
  C)
                  Same chemical properties done clear
  D)
                  Different atomic mass done clear
  View Solution play_arrow

• question_answer32)
  An element \['A'\] emits an \[\alpha \]-particle and forms \['B'.\,'A'\] and \['B'\] are                                        [DPMT 1990]
  A)
                  Isotopes              done clear
  B)
                  Isobars done clear
  C)
                  Isotones              done clear
  D)
                  Isodiasphere done clear
  View Solution play_arrow

• question_answer33)
  Which of the following properties are different for neutral atoms of isotopes of the same element [EAMCET 1987; NCERT 1971; CPMT 1976; MP PET 1994]
  A)
                  Mass done clear
  B)
                  Atomic number done clear
  C)
                  General chemical reactions done clear
  D)
                  Number of electrons done clear
  View Solution play_arrow

• question_answer34)
  The isotope \[_{92}{{U}^{235}}\] decays in a number of steps to an isotope of lead \[_{82}P{{b}^{207}}\]. The groups of particles emitted in this process will be                                  [MP PMT 1987]
  A)
                  \[4\alpha ,\,7\beta \]     done clear
  B)
                  \[6\alpha ,\,4\beta \] done clear
  C)
                  \[7\alpha ,\,4\beta \]     done clear
  D)
                  \[10\alpha ,\,8\beta \] done clear
  View Solution play_arrow

• question_answer35)
  Addition of two neutrons in an atom \[A\] would             [AMU 1984]
  A)
                  Change the chemical nature of \[A\] done clear
  B)
                  Produce an isobar of \[A\] done clear
  C)
                  Produce an isotope of A done clear
  D)
                  Produce another element done clear
  View Solution play_arrow

• question_answer36)
  Atomic weight of the isotope of hydrogen which contains 2 neutrons is the nucleus would be    [CPMT 1980]
  A)
                  2 done clear
  B)
                  3 done clear
  C)
                  1              done clear
  D)
                  4 done clear
  View Solution play_arrow

• question_answer37)
  If a radioactive isotope with atomic number A and mass number M emits an \[\alpha \]-particle, the atomic number and mass number of that new isotope will become [NCERT 1980]
  A)
                  A ? 2,  M ? 4       done clear
  B)
                  A ? 2,  M done clear
  C)
                  A,  M ? 2              done clear
  D)
                  A ? 4,  M ? 2 done clear
  View Solution play_arrow

• question_answer38)
  Which character is different of the two isotopes of an element  [NCERT 1971; EAMCET 1980, 92; CPMT 1992]
  A)
                  Atomic mass      done clear
  B)
                  Atomic number done clear
  C)
                  Number of electrons      done clear
  D)
                  Number of protons done clear
  View Solution play_arrow

• question_answer39)
  The symbol of an isotope is \[_{32}{{X}^{65}}\], this reveals that [MP PET 1991]
  A)
                  Its atomic number is 32 and atomic weight is 65 done clear
  B)
                  Its atomic number is 65 done clear
  C)
                  It has 65 electrons done clear
  D)
                  It has 32 neutrons done clear
  View Solution play_arrow

• question_answer40)
  Two atoms have the same atomic mass but different atomic numbers. Such atoms are called as [NCERT 1971, 76; IIT 1983]
  A)
                  Isotopes              done clear
  B)
                  Isobars done clear
  C)
                  Isomer  done clear
  D)
                  Isoelectronic done clear
  View Solution play_arrow

• question_answer41)
  \[_{18}A{{r}^{40}},{{\,}_{20}}C{{a}^{40}}\] and  \[_{19}{{K}^{40}}\]  are [MNR 1983; DPMT 1991; EAMCET 1992; RPMT 1997; Pb.CET 2000]
  A)
                  Isomers                done clear
  B)
                  Isotopes done clear
  C)
                  Isobars done clear
  D)
                  Isotones done clear
  View Solution play_arrow

• question_answer42)
  Atoms in hydrogen gas have preponderance of [CPMT 1972]
  A)
                  \[_{1}{{H}^{1}}\] atoms done clear
  B)
                  Deuteron atoms done clear
  C)
                  Tritium atoms done clear
  D)
                  All the three A, B and C are in equal proportion done clear
  View Solution play_arrow

• question_answer43)
  Positron emission results from the transformation of one nuclear proton into neutron. The isotope thus produced possesses                                           [MP PMT 1990]
  A)
                  Same mass number        done clear
  B)
                  Higher nuclear charge done clear
  C)
                  Intense radioactivity       done clear
  D)
                  No radioactivity done clear
  View Solution play_arrow

• question_answer44)
  An isotope of oxygen has mass number 18. Other isotopes of oxygen will have the same [MP PMT 1985; MADT Bihar 1981]
  A)
                  Mass number    done clear
  B)
                  Atomic weight done clear
  C)
                  Number of neutrons      done clear
  D)
                  Number of protons done clear
  View Solution play_arrow

• question_answer45)
  Two nuclei which are not identical but have the same number of nucleons represent
  A)
                  Isotopes              done clear
  B)
                  Isobars done clear
  C)
                  Isotones              done clear
  D)
                  None of the three done clear
  View Solution play_arrow

• question_answer46)
  The \[\beta \]-decay of \[_{11}N{{a}^{24}}\] produces an isotope of [NCERT 1978]
  A)
                  Mg         done clear
  B)
                  Na done clear
  C)
                  Al            done clear
  D)
                  Ne done clear
  View Solution play_arrow

• question_answer47)
  Isotopes differ in                                             [NCERT 1973]
  A)
                  Number of protons         done clear
  B)
                  Valency done clear
  C)
                  Chemical reactivity          done clear
  D)
                  Number of neutrons done clear
  View Solution play_arrow

• question_answer48)
  The isobars are atoms with the same number of [DPMT 1982; CPMT 1994]
  A)
                  Protons                done clear
  B)
                  Neutrons done clear
  C)
                  Protons and neutrons    done clear
  D)
                  Nucleons done clear
  View Solution play_arrow

• question_answer49)
  Radioactive isotope of hydrogen is   [MP PMT 2001; MPPET 2003]
  A)
                  Tritium done clear
  B)
                  Deuterium done clear
  C)
                  Para hydrogen  done clear
  D)
                  Ortho hydrogen done clear
  View Solution play_arrow

• question_answer50)
  Isotopes of same elements have the same number of [BHU 1984; DPMT 1983; CPMT 1972, 78; AFMC 2000, 01]
  A)
                  Protons                done clear
  B)
                  Neutrons done clear
  C)
                  Deutrons             done clear
  D)
                  None done clear
  View Solution play_arrow

• question_answer51)
  In chlorine gas, ratio of \[C{{l}^{35}}\] and \[C{{l}^{37}}\]is [BHU 1984; CPMT 1977, 80]
  A)
                  1 : 3        done clear
  B)
                  3 : 1 done clear
  C)
                  1 : 1        done clear
  D)
                  1 : 4 done clear
  View Solution play_arrow

• question_answer52)
  An ordinary oxygen contains      [NCERT 1977]
  A)
                  Only \[O-16\] isotopes done clear
  B)
                  Only \[O-17\] isotopes done clear
  C)
                  A mixture of \[O-16\] and \[O-18\]  isotopes done clear
  D)
                  A mixture of O ? 16, \[O-17\] and \[O-18\]  isotopes done clear
  View Solution play_arrow

• question_answer53)
  Isotopes were discovered by     [AMU 1983; AFMC 1995]
  A)
                  Aston    done clear
  B)
                  Soddy done clear
  C)
                  Thomson             done clear
  D)
                  Millikan done clear
  View Solution play_arrow

• question_answer54)
  Which of the following are iso-electronic               [CBSE 2002]
  A)
                  \[C{{O}_{2}}\] and \[NO\]            done clear
  B)
                  \[S{{O}_{2}}\] and\[C{{O}_{2}}\] done clear
  C)
                  \[CN\] and \[CO\]            done clear
  D)
                  \[N{{O}_{2}}\] and \[C{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer55)
  Which of the following are pairs of isotopes [Bihar CEE 1982]
  A)
                  \[_{1}^{2}{{H}^{+}}\] and \[_{1}^{3}H\]                 done clear
  B)
                  \[_{1}^{3}H\]  and \[_{2}^{4}{{H}^{-}}\] done clear
  C)
                  \[_{2}^{3}He\] and \[_{2}^{4}He\]           done clear
  D)
                  \[_{6}^{12}C\] and \[_{7}^{14}{{N}^{+}}\] done clear
  View Solution play_arrow

• question_answer56)
  Which among the following isotope is not found in natural uranium                                         [Orissa JEE 2002]
  A)
                  \[_{92}{{U}^{234}}\]       done clear
  B)
                  \[_{92}{{U}^{235}}\] done clear
  C)
                  \[_{92}{{U}^{238}}\]       done clear
  D)
                  \[_{92}{{U}^{239}}\] done clear
  View Solution play_arrow

• question_answer57)
  An isotone of \[_{32}^{76}Ge\]is (one or more are correct) [IIT 1984; MADT Bihar 1995; MP PMT 1995]
  A)
                  \[_{32}^{77}Ge\]             done clear
  B)
                  \[_{33}^{77}As\] done clear
  C)
                  \[_{34}^{77}Se\]              done clear
  D)
                  \[_{34}^{78}Se\] done clear
  View Solution play_arrow