Page 1 1 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in IIT-JAM CHEMISTRY-(CY) 2016 TEST : ATOMIC STRUCTURE Time : 00:50 Hour Date : 04-07-2015 M.M. : 60 Instructions: â€¢ Part-A contains 10 Multiple Choice Questions (MCQ). Each question has 4 choices (a), (b), (c) and (d), for its answer, out of which ONLY ONE is correct. For each correct answer you will be awarded 3 marks. For each incorrect answered 1 mark will be deducted. â€¢ Part-B contains 05 Multiple Select Questions(MSQ). Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONE or MORE than ONE is/are correct. For each correct answer you will be awarded 2 marks, there is no negative marking in this section. â€¢ Part-C contains 10 Numerical Answer Type (NAT) questions which contain 2 Marks for each, and there is no negative marking. PART- A 1. A particle is moving in one dimensional box between x = a and x = b. The potential energy is such that the particle can not be outside these limits and the wave function in between is A x ? ? . The average value of x is: (a) ab b a ? (b) ab b n b a a ? ? (c) ab b n b a a ? ? (d) ab a n b a b ? ? 2. An electron is confined in a 1-D box of 1 nm long. How many energy levels are there with energy less than 10 eV is: (a) 5 (b) 10 (c) 15 (d) 16 3. Identify which of the following operators is not hermitian ? (a) d i dx ? (b) 2 2 d i dx (c) 2 2 d dx (d) 2 x 4. TThe angle between the angular momentum l = 2 and the z-axis for m l = 2 is: (a) 35.3 (b) 65.9 (c) 114.1 (d) 144.7 5. A hydrogenic orbital with radial function of the form ? ? a r exp ß r ? and ? â€“part as ? ? exp 3i ? ? corresponds to (a) n 4,l 3, m 3 ? ? ? (b) n 4,l 3,m 3 ? ? ? ? (c) n 4, l >3, m 3 ? ? (d) n > 4, l = 3, m 3 ? ? 6. A particle is in a one-dimensional box with a potential V 0 inside the box and infinite outside. An energy state corresponding to n = 0 (n : quantum number) is not allowed because (a) the total energy becomes zero (b) the average momentum becomes zero (c) the wave function becomes zero everywhere (d) the potential 0 V 0 ? Page 2 1 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in IIT-JAM CHEMISTRY-(CY) 2016 TEST : ATOMIC STRUCTURE Time : 00:50 Hour Date : 04-07-2015 M.M. : 60 Instructions: â€¢ Part-A contains 10 Multiple Choice Questions (MCQ). Each question has 4 choices (a), (b), (c) and (d), for its answer, out of which ONLY ONE is correct. For each correct answer you will be awarded 3 marks. For each incorrect answered 1 mark will be deducted. â€¢ Part-B contains 05 Multiple Select Questions(MSQ). Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONE or MORE than ONE is/are correct. For each correct answer you will be awarded 2 marks, there is no negative marking in this section. â€¢ Part-C contains 10 Numerical Answer Type (NAT) questions which contain 2 Marks for each, and there is no negative marking. PART- A 1. A particle is moving in one dimensional box between x = a and x = b. The potential energy is such that the particle can not be outside these limits and the wave function in between is A x ? ? . The average value of x is: (a) ab b a ? (b) ab b n b a a ? ? (c) ab b n b a a ? ? (d) ab a n b a b ? ? 2. An electron is confined in a 1-D box of 1 nm long. How many energy levels are there with energy less than 10 eV is: (a) 5 (b) 10 (c) 15 (d) 16 3. Identify which of the following operators is not hermitian ? (a) d i dx ? (b) 2 2 d i dx (c) 2 2 d dx (d) 2 x 4. TThe angle between the angular momentum l = 2 and the z-axis for m l = 2 is: (a) 35.3 (b) 65.9 (c) 114.1 (d) 144.7 5. A hydrogenic orbital with radial function of the form ? ? a r exp ß r ? and ? â€“part as ? ? exp 3i ? ? corresponds to (a) n 4,l 3, m 3 ? ? ? (b) n 4,l 3,m 3 ? ? ? ? (c) n 4, l >3, m 3 ? ? (d) n > 4, l = 3, m 3 ? ? 6. A particle is in a one-dimensional box with a potential V 0 inside the box and infinite outside. An energy state corresponding to n = 0 (n : quantum number) is not allowed because (a) the total energy becomes zero (b) the average momentum becomes zero (c) the wave function becomes zero everywhere (d) the potential 0 V 0 ? 2 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in 7. An eigenstate of energy satisfie n n n H E ? ? ? . In the presence of an extra constant potential V 0 (a) both E n and n ? will change (b) both E n and average kinetic energy will change (c) only E n will change, but not n ? (d) only n ? will change, but not E n . 8. Compare the difference of energies of the first excited and ground states of a particle confined in (i) a 1-d box ? ? 1 ? , (ii) a 2-d square box ? ? 2 ? and (iii) a 3-d cubic box ? ? 3 ? . Assume the length of each of the boxes is the same. The correct relation between the energy differences 1 2 , ? ? and 3 ? for the three states is (a) 1 2 3 ? ? ? ? ? (b) 1 2 3 ? ? ? ? ? (c) 3 2 1 ? ? ? ? ? (d) 3 1 2 ? ? ? ? ? 9. The correct statement about both the average value of position ? ? x and momentum ? ? p of a 1-d har- monic oscillator wavefunction is (a) 0 x ? and 0 p ? (b) 0 x ? but 0 p ? (c) 0 x ? and 0 p ? (d) 0 x ? but 0 p ? 10. The value of the commutator ? ? , , x x x p ? ? ? ? is (a) i x ? (b) i ? ? (c) i ? (d) 0 PART- B 11. Analyse the function given , 2 /3 , , sin cos cos ? ? ? n m e ? ? ? ? ? ? The correct statement is (a) Angular node corresponding to this function = 3 and radial node corresonding to this function = 0 (b) The z-component of angular momentum corresponding to the above function is 2 h ? (c) Total angular momentum corresponding to this function 2 2 3 2 h ? and energy corresponding to this function is â€“ 0.055 a.u. (d) Average value of r corresponding to above function is 12a 0 . 12. Consider the statement. The correct statements are (a) In the Bohr atom the angular momentum always had a non-zero value. While in the modern theory the angular momentum is zero in S state only (b) In Schrodinger model n has nothing directly to do with angular momentum, while on Bohr model n was measure first of the angular momentum of the system. (c) If a hydrogen atom in the ground 1s state absorb radiation, then it must be finally in 2s state. (d) The virial theorem corresonding to H-atom is 2×total energy = â€“ <potential energy) 13. The incorrect statement is (a) The degeneracy corresponding to Li ++ species having energy 2 0 0 72 ? ? e a ? is 9 (b) The degeneracy corresponding to rotating a particle of mass â€˜mâ€™ having energy 2 2 2 5 2 h mr ? is 7 (c) The energy corresponding to particle confined to move in 2D square box having energy 2 2 25 4 ? h is 2 (d) The negative value of energy eigenvalue 2 2 13.6 ? ? ? ? ? ? ? ? ? ? z E n corresponds to scattering states in which there is not enough energy for the electron to escape from the nucleus Page 3 1 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in IIT-JAM CHEMISTRY-(CY) 2016 TEST : ATOMIC STRUCTURE Time : 00:50 Hour Date : 04-07-2015 M.M. : 60 Instructions: â€¢ Part-A contains 10 Multiple Choice Questions (MCQ). Each question has 4 choices (a), (b), (c) and (d), for its answer, out of which ONLY ONE is correct. For each correct answer you will be awarded 3 marks. For each incorrect answered 1 mark will be deducted. â€¢ Part-B contains 05 Multiple Select Questions(MSQ). Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONE or MORE than ONE is/are correct. For each correct answer you will be awarded 2 marks, there is no negative marking in this section. â€¢ Part-C contains 10 Numerical Answer Type (NAT) questions which contain 2 Marks for each, and there is no negative marking. PART- A 1. A particle is moving in one dimensional box between x = a and x = b. The potential energy is such that the particle can not be outside these limits and the wave function in between is A x ? ? . The average value of x is: (a) ab b a ? (b) ab b n b a a ? ? (c) ab b n b a a ? ? (d) ab a n b a b ? ? 2. An electron is confined in a 1-D box of 1 nm long. How many energy levels are there with energy less than 10 eV is: (a) 5 (b) 10 (c) 15 (d) 16 3. Identify which of the following operators is not hermitian ? (a) d i dx ? (b) 2 2 d i dx (c) 2 2 d dx (d) 2 x 4. TThe angle between the angular momentum l = 2 and the z-axis for m l = 2 is: (a) 35.3 (b) 65.9 (c) 114.1 (d) 144.7 5. A hydrogenic orbital with radial function of the form ? ? a r exp ß r ? and ? â€“part as ? ? exp 3i ? ? corresponds to (a) n 4,l 3, m 3 ? ? ? (b) n 4,l 3,m 3 ? ? ? ? (c) n 4, l >3, m 3 ? ? (d) n > 4, l = 3, m 3 ? ? 6. A particle is in a one-dimensional box with a potential V 0 inside the box and infinite outside. An energy state corresponding to n = 0 (n : quantum number) is not allowed because (a) the total energy becomes zero (b) the average momentum becomes zero (c) the wave function becomes zero everywhere (d) the potential 0 V 0 ? 2 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in 7. An eigenstate of energy satisfie n n n H E ? ? ? . In the presence of an extra constant potential V 0 (a) both E n and n ? will change (b) both E n and average kinetic energy will change (c) only E n will change, but not n ? (d) only n ? will change, but not E n . 8. Compare the difference of energies of the first excited and ground states of a particle confined in (i) a 1-d box ? ? 1 ? , (ii) a 2-d square box ? ? 2 ? and (iii) a 3-d cubic box ? ? 3 ? . Assume the length of each of the boxes is the same. The correct relation between the energy differences 1 2 , ? ? and 3 ? for the three states is (a) 1 2 3 ? ? ? ? ? (b) 1 2 3 ? ? ? ? ? (c) 3 2 1 ? ? ? ? ? (d) 3 1 2 ? ? ? ? ? 9. The correct statement about both the average value of position ? ? x and momentum ? ? p of a 1-d har- monic oscillator wavefunction is (a) 0 x ? and 0 p ? (b) 0 x ? but 0 p ? (c) 0 x ? and 0 p ? (d) 0 x ? but 0 p ? 10. The value of the commutator ? ? , , x x x p ? ? ? ? is (a) i x ? (b) i ? ? (c) i ? (d) 0 PART- B 11. Analyse the function given , 2 /3 , , sin cos cos ? ? ? n m e ? ? ? ? ? ? The correct statement is (a) Angular node corresponding to this function = 3 and radial node corresonding to this function = 0 (b) The z-component of angular momentum corresponding to the above function is 2 h ? (c) Total angular momentum corresponding to this function 2 2 3 2 h ? and energy corresponding to this function is â€“ 0.055 a.u. (d) Average value of r corresponding to above function is 12a 0 . 12. Consider the statement. The correct statements are (a) In the Bohr atom the angular momentum always had a non-zero value. While in the modern theory the angular momentum is zero in S state only (b) In Schrodinger model n has nothing directly to do with angular momentum, while on Bohr model n was measure first of the angular momentum of the system. (c) If a hydrogen atom in the ground 1s state absorb radiation, then it must be finally in 2s state. (d) The virial theorem corresonding to H-atom is 2×total energy = â€“ <potential energy) 13. The incorrect statement is (a) The degeneracy corresponding to Li ++ species having energy 2 0 0 72 ? ? e a ? is 9 (b) The degeneracy corresponding to rotating a particle of mass â€˜mâ€™ having energy 2 2 2 5 2 h mr ? is 7 (c) The energy corresponding to particle confined to move in 2D square box having energy 2 2 25 4 ? h is 2 (d) The negative value of energy eigenvalue 2 2 13.6 ? ? ? ? ? ? ? ? ? ? z E n corresponds to scattering states in which there is not enough energy for the electron to escape from the nucleus 3 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in 14. ? ? /3 6 cos Zr N r Z r e ? ? ? ? ? , is a proposed hydrogenic wavefunction, where Z = atomic number, r = radial distance from the nucleus, ? = azimuthal angle, N is a constant. The CORRECT statement about ? is (a) 0 ? ? in the xy-plane (b) two radial nodes are presenet in ? (c) one angular node is present in ? (d) the size of the orbital decreases with increase in atomic number 15. Among the following statements, which statements TRUE for a Hermitian operator are : (a) The eigen values are real (b) the eigen functions are orthogonal (c) The represent observables (d) The scalar product of two different eigen function is equal to one PART- C 16. The wavelength associated with an electron moving with a velocity of 3 10 msec ? ___________(â€“10 â€“7 m). 17. The degenracy of the energy level 2 2 12h 8ml of a particle in a three dimensional cube of the length â€˜aâ€™ is ________ 18. In the units of 2 2 h 8ml , the energy difference between levels corresponding to 3 to 2 node eigen functions for a particle of mass m in a one dimensional box of length â€˜ ? â€™ is _________ 19. For unnormalized wave-function, ? ? 2 0 0 0 2r r r r, , sin cos exp a a a ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? , the number of radial node(s) is_____________________ 20. The wavelength of an electron accelerated through a potential of 100 kV is _______________________(Å) 21. The probability of finding the particle in one dimensional box of length L in the region between L 4 and 3L 4 for quantum number n = 2 is ____________________ % 22. The ground state translational energy of a particle in one-dimensional box of 300pm length is about 4 eV. Suppose that the same particle is moving in a three-dimensional cubic box of 100 pm on the side. The ground state energy of the particle in the three-dimensional box is ______________ (eV). 23. A cubic box of edge-length 1.2 nm contains 10 electrons. Applying the simple particle in a box theory, the value of E ? for the first excited state of this system is ____________(10 â€“20 J) 24. For a particle of mass m confined in a box of length L, assume ?x = L. Assume further that 1 2 2 p(min) p ? ? . Use the uncertainity principle to obtain an estimate of the energy of the particle. The value will be ________ 2 2 mL ? ? ? ? ? ? ? . 25. The ground state energy of hydrogen atom is â€“13.598 eV. The expectation values of kinetic energy, T is __________ (in units of eV). Page 4 1 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in IIT-JAM CHEMISTRY-(CY) 2016 TEST : ATOMIC STRUCTURE Time : 00:50 Hour Date : 04-07-2015 M.M. : 60 Instructions: â€¢ Part-A contains 10 Multiple Choice Questions (MCQ). Each question has 4 choices (a), (b), (c) and (d), for its answer, out of which ONLY ONE is correct. For each correct answer you will be awarded 3 marks. For each incorrect answered 1 mark will be deducted. â€¢ Part-B contains 05 Multiple Select Questions(MSQ). Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONE or MORE than ONE is/are correct. For each correct answer you will be awarded 2 marks, there is no negative marking in this section. â€¢ Part-C contains 10 Numerical Answer Type (NAT) questions which contain 2 Marks for each, and there is no negative marking. PART- A 1. A particle is moving in one dimensional box between x = a and x = b. The potential energy is such that the particle can not be outside these limits and the wave function in between is A x ? ? . The average value of x is: (a) ab b a ? (b) ab b n b a a ? ? (c) ab b n b a a ? ? (d) ab a n b a b ? ? 2. An electron is confined in a 1-D box of 1 nm long. How many energy levels are there with energy less than 10 eV is: (a) 5 (b) 10 (c) 15 (d) 16 3. Identify which of the following operators is not hermitian ? (a) d i dx ? (b) 2 2 d i dx (c) 2 2 d dx (d) 2 x 4. TThe angle between the angular momentum l = 2 and the z-axis for m l = 2 is: (a) 35.3 (b) 65.9 (c) 114.1 (d) 144.7 5. A hydrogenic orbital with radial function of the form ? ? a r exp ß r ? and ? â€“part as ? ? exp 3i ? ? corresponds to (a) n 4,l 3, m 3 ? ? ? (b) n 4,l 3,m 3 ? ? ? ? (c) n 4, l >3, m 3 ? ? (d) n > 4, l = 3, m 3 ? ? 6. A particle is in a one-dimensional box with a potential V 0 inside the box and infinite outside. An energy state corresponding to n = 0 (n : quantum number) is not allowed because (a) the total energy becomes zero (b) the average momentum becomes zero (c) the wave function becomes zero everywhere (d) the potential 0 V 0 ? 2 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in 7. An eigenstate of energy satisfie n n n H E ? ? ? . In the presence of an extra constant potential V 0 (a) both E n and n ? will change (b) both E n and average kinetic energy will change (c) only E n will change, but not n ? (d) only n ? will change, but not E n . 8. Compare the difference of energies of the first excited and ground states of a particle confined in (i) a 1-d box ? ? 1 ? , (ii) a 2-d square box ? ? 2 ? and (iii) a 3-d cubic box ? ? 3 ? . Assume the length of each of the boxes is the same. The correct relation between the energy differences 1 2 , ? ? and 3 ? for the three states is (a) 1 2 3 ? ? ? ? ? (b) 1 2 3 ? ? ? ? ? (c) 3 2 1 ? ? ? ? ? (d) 3 1 2 ? ? ? ? ? 9. The correct statement about both the average value of position ? ? x and momentum ? ? p of a 1-d har- monic oscillator wavefunction is (a) 0 x ? and 0 p ? (b) 0 x ? but 0 p ? (c) 0 x ? and 0 p ? (d) 0 x ? but 0 p ? 10. The value of the commutator ? ? , , x x x p ? ? ? ? is (a) i x ? (b) i ? ? (c) i ? (d) 0 PART- B 11. Analyse the function given , 2 /3 , , sin cos cos ? ? ? n m e ? ? ? ? ? ? The correct statement is (a) Angular node corresponding to this function = 3 and radial node corresonding to this function = 0 (b) The z-component of angular momentum corresponding to the above function is 2 h ? (c) Total angular momentum corresponding to this function 2 2 3 2 h ? and energy corresponding to this function is â€“ 0.055 a.u. (d) Average value of r corresponding to above function is 12a 0 . 12. Consider the statement. The correct statements are (a) In the Bohr atom the angular momentum always had a non-zero value. While in the modern theory the angular momentum is zero in S state only (b) In Schrodinger model n has nothing directly to do with angular momentum, while on Bohr model n was measure first of the angular momentum of the system. (c) If a hydrogen atom in the ground 1s state absorb radiation, then it must be finally in 2s state. (d) The virial theorem corresonding to H-atom is 2×total energy = â€“ <potential energy) 13. The incorrect statement is (a) The degeneracy corresponding to Li ++ species having energy 2 0 0 72 ? ? e a ? is 9 (b) The degeneracy corresponding to rotating a particle of mass â€˜mâ€™ having energy 2 2 2 5 2 h mr ? is 7 (c) The energy corresponding to particle confined to move in 2D square box having energy 2 2 25 4 ? h is 2 (d) The negative value of energy eigenvalue 2 2 13.6 ? ? ? ? ? ? ? ? ? ? z E n corresponds to scattering states in which there is not enough energy for the electron to escape from the nucleus 3 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in 14. ? ? /3 6 cos Zr N r Z r e ? ? ? ? ? , is a proposed hydrogenic wavefunction, where Z = atomic number, r = radial distance from the nucleus, ? = azimuthal angle, N is a constant. The CORRECT statement about ? is (a) 0 ? ? in the xy-plane (b) two radial nodes are presenet in ? (c) one angular node is present in ? (d) the size of the orbital decreases with increase in atomic number 15. Among the following statements, which statements TRUE for a Hermitian operator are : (a) The eigen values are real (b) the eigen functions are orthogonal (c) The represent observables (d) The scalar product of two different eigen function is equal to one PART- C 16. The wavelength associated with an electron moving with a velocity of 3 10 msec ? ___________(â€“10 â€“7 m). 17. The degenracy of the energy level 2 2 12h 8ml of a particle in a three dimensional cube of the length â€˜aâ€™ is ________ 18. In the units of 2 2 h 8ml , the energy difference between levels corresponding to 3 to 2 node eigen functions for a particle of mass m in a one dimensional box of length â€˜ ? â€™ is _________ 19. For unnormalized wave-function, ? ? 2 0 0 0 2r r r r, , sin cos exp a a a ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? , the number of radial node(s) is_____________________ 20. The wavelength of an electron accelerated through a potential of 100 kV is _______________________(Å) 21. The probability of finding the particle in one dimensional box of length L in the region between L 4 and 3L 4 for quantum number n = 2 is ____________________ % 22. The ground state translational energy of a particle in one-dimensional box of 300pm length is about 4 eV. Suppose that the same particle is moving in a three-dimensional cubic box of 100 pm on the side. The ground state energy of the particle in the three-dimensional box is ______________ (eV). 23. A cubic box of edge-length 1.2 nm contains 10 electrons. Applying the simple particle in a box theory, the value of E ? for the first excited state of this system is ____________(10 â€“20 J) 24. For a particle of mass m confined in a box of length L, assume ?x = L. Assume further that 1 2 2 p(min) p ? ? . Use the uncertainity principle to obtain an estimate of the energy of the particle. The value will be ________ 2 2 mL ? ? ? ? ? ? ? . 25. The ground state energy of hydrogen atom is â€“13.598 eV. The expectation values of kinetic energy, T is __________ (in units of eV). 4 North Delhi: 33-35, First Floor, Mall Road, G.T.B. Nagar (Opp.- Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255 South Delhi: 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 www.careerendeavour.in IIT-JAM CHEMISTRY-2016 TEST : ATOMIC STRUCTURE ANSWER KEY Part - A 1. (c) 2. (a) 3. (b) 4. (a) 5. (d) 6. (c) 7. (c) 8. (b) 9. (c) 10. (d) Part - B 11. (b,c,d) 12. (a,b) 13. (a,b,c,d) 14. (a,c,d) 15. (a,b,c ) Part - C 16. (7.25) 17. (1) 18. (7) 19. (1) 20. (0.037) 21. (50) 22. (108) 23. (8.366) 24. (0.125) 25. (13.598 ) Date : 04-07-2015Read More