Nuclear Chemistry

ABC26IN1332 · Consider following statements for fission of U235 with thermal neutrons. A. The% of nuclei undergoing unsymmetrical fission is maximum. B… · JUNE 2017

ABC26IN1335 · The nuclides among the following, capable of undergoing fission by thermal neutrons, are (A) 233U (B) 235U (C) 239Pu (D) 232Th · JUNE 2014

ABC26IN0748 · For the following fusion reaction, 4 1 H → 4 He+2 beta ++2 nu + gamma the Q-value (energy of the reaction) in MeV (rounded off to one… · 2005-2022

ABC26IN0740 · In boron neutron capture therapy, the initial boron isotope used and the particle generated after neutron capture respectively are: · 2005-2022

ABC26IN0743 · The isotope 84214 Po undergoes one alpha and one beta particle emission sequentially to form an isotope " X ". The number of neutrons in "… · 2005-2022

ABC26IN1339 · In 'carbon-dating' application of radioisotopes, 14C emits · JUNE 2012

ABC26IN1329 · In neutron activation analysis the radiation commonly detected is · JUNE 2019

ABC26IN0736 · In the process 92234 U → 90230 Th+X X is: · 2005-2022

ABC26IN0738 · In the following equation X is: 95241 Am+ alpha → 97243 Bk+X · 2005-2022

ABC26IN1337 · The particles postulated to always accompany the positron emission among are: (A) neutrino, (B) anti-neutrino, (C) electron, · JUNE 2014

ABC26IN1327 · Consider the nuclear reaction 92 X234+ beta + alpha → Y+ gamma +2 beta + Y is · JUNE 2011

ABC26IN0220 · Which one of the following pairs has two magic numbers for closed nuclear shells? 1. 8, 10 2. 10, 20 3. 50, 82 4. 82, 130 · 2017 self-practice

ABC26IN0221 · Choose the correct statement for magnitude of threshold energy of an endoergic nuclear reaction between stationary nucleus and a moving… · 2017 self-practice

ABC26IN1331 · Choose the correct statement for magnitude of threshold energy of an endoergic nuclear reaction between stationary nucleus and a moving… · JUNE 2017

ABC26IN0222 · Identify radioactive capture from the following nuclear reactions: 1. 9Be(gamma, n) 8Be 2. 23Na(n, gamma) 24Na 3. 63Cu(p, p 3n 9 alpha)… · 2015 self-practice

ABC26IN1334 · Identify radioactive capture from the following nuclear reactions: · DEC 2015

ABC26IN1340 · For the nuclear reactions. (A) 48Be → 2 24He (B) 3680Kr → 2 1840Ar (Given masses: 8Be = 8.005300, 4He = 4.002603 and 3680Kr = 79.81638… · DEC 2011

ABC26IN1341 · The species 19 Ne and 14 C emit a positron and beta -particle respectively. The resulting species formed are respectively · JUNE 2011

ABC26IN0480 · Among the following, the most stable isotope to radioactive decay is · 2005-2021

ABC26IN0482 · The total number of alpha and beta particles emitted in the following radioactive decay is ____ 92238 U → 82210 Pb · 2005-2021

ABC26IN0483 · The fission reaction of 23592U with thermal neutron is represented below. 9941Nb and 13351Sb are the primary fission fragment pair, which… · 2005-2021

ABC26IN0484 · Given the initial weight of 1 mg of radioactive 2760 Co (half-life =5.27 years), the amount disintegrated in 1 year (rounded off to two… · 2005-2021 self-practice

ABC26IN0732 · The radioactive isotope used to locate brain tumors is · 2005-2022

ABC26IN0734 · The half-life of a radioactive nuclide is 20 years. If a sample of this nuclide has an activity of 6400 disintegrations per minute… · 2005-2022

ABC26IN0739 · The total number of steps involved and number of beta particles emitted in the spontaneous decay of 92238 U → 82206 Pb respectively, are · 2005-2022

ABC26IN0741 · The number of alpha and beta particle(s), generated in the following radioactive decay process, are: 92238U → 92234U · 2005-2022

ABC26IN0746 · 24 Na decays to one-fourth of its initial amount in 29.8 hours. Its decay constant is ____ hour -1 (rounded up to four decimal places). · 2005-2022 self-practice

ABC26IN0747 · A radioactive sample decays to 10% of its initial amount in 4600 minutes. The rate constant of this process is ____ hour -1 (Round off to… · 2005-2022 self-practice