This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Physics Part Ii > Class 12 Physics (Part Ii) Chapter 13 Nuclei – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part Ii) Chapter 13 Nuclei Quiz 2 (9 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The least ionising A) $\gamma$. B) $\alpha$. C) $\beta^+$. D) $\beta^-$. Show Answer Correct Answer: A) $\gamma$. 2. The mass of alpha particle is A) Less than the sum of masses of twoprotons and two neutrons. B) Equal to masses of four protons. C) Equal to masses of four neutrons. D) None of the above. Show Answer Correct Answer: A) Less than the sum of masses of twoprotons and two neutrons. 3. True or False:During nuclear decay atoms of one element can change into atoms of a different element altogether. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. What shape is a deoxyribose sugar molecule? A) Square. B) Triangle. C) Pentagon. D) Hexagon. Show Answer Correct Answer: C) Pentagon. 5. The binding energy per nucleon of Deuteron($_{1}$H$^{2}$) and helium nucleus ($_{2}$He$^{4}$) is 1.1 MeVand 7 MeV respectively. If two $_{1}$H$^{2}$ combineto form, $_{2}$He$^{4}$, then energy released is A) 13.9 MeV. B) 19.2 MeV. C) 26.9 MeV. D) 23.6 MeV. Show Answer Correct Answer: D) 23.6 MeV. 6. What makes something radioactive? A) Elements with an atomic number above 81. B) An unstable nucleus. C) Contaminated sewage. D) It decays over time. Show Answer Correct Answer: B) An unstable nucleus. 7. Which sequence of radioactive emissions results in the formation of an isotope of the original element? A) One $\alpha$ particle and one $\beta$$^{-}$ particle. B) One $\alpha$ particle and two $\beta$$^{-}$ particles. C) Two $\alpha$ particles and one $\beta$$^{-}$ particle. D) Two $\alpha$ particles and two $\beta$$^{-}$ particles. Show Answer Correct Answer: B) One $\alpha$ particle and two $\beta$$^{-}$ particles. 8. Volume of a nucleus is directly proportional to A) Atomic number. B) Density of nucleus. C) Radius of nucleus. D) Atomic mass. Show Answer Correct Answer: D) Atomic mass. 9. If the mRNA code is CCAGAUGCA, what would the corresponding DNA code be? A) GGACTACGT. B) CCTGATGCA. C) GGTCTACGT. D) GGACTACGT. Show Answer Correct Answer: C) GGTCTACGT. ← PreviousRelated QuizzesScience QuizzesClass 12 QuizzesClass 12 Physics (Part Ii) Chapter 13 Nuclei Quiz 1Class 12 Physics (Part Ii) Chapter 10 Wave Optics QuizClass 12 Physics (Part Ii) Chapter 11 Dual Nature Of Radiation And Matter QuizClass 12 Physics (Part Ii) Chapter 12 Atoms QuizClass 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials QuizClass 12 Physics (Part Ii) Chapter 9 Ray Optics And Optical Instruments Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books