This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In the nucleus of an atom, the mass is the greatest because ..... A) Electrons and protons are located inside, and they are the largest subatomic particles. B) Protons and Neutrons are located inside, and they are the smallest subatomic particles. C) Protons and Neutrons are located inside, and they are the largest subatomic particles. D) None of the above. Show Answer Correct Answer: C) Protons and Neutrons are located inside, and they are the largest subatomic particles. 2. How many subatomic particles does an atom contain? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: C) 3. 3. Objects that are electrically neutral become when they lose electrons. A) Positive. B) Negative. C) Neutral. D) Doubly charged. Show Answer Correct Answer: A) Positive. 4. Number of shells are given by the formula: A) -l to +l. B) 2n$^{2}$. C) N. D) N$^{2}$. Show Answer Correct Answer: C) N. 5. What is the overall charge of an atom? A) Positive. B) Negative. C) Neutral. D) Zero. Show Answer Correct Answer: C) Neutral. 6. Where are the electrons located? A) Inside the nucleus. B) Outside the nucleus in the proton cloud. C) Inside the nucleus in the electron cloud. D) Outside the nucleus in the electron cloud. Show Answer Correct Answer: D) Outside the nucleus in the electron cloud. 7. Which of the following statements about Rutherford's model of atom are correct? A) The nucleus is positively charged by protons. B) The nucleus is neutral from protons. C) The nucleus is negatively charged by electrons. D) There is no nucleus. Show Answer Correct Answer: A) The nucleus is positively charged by protons. 8. What is the value of Planck's constant? A) $3\times10^8$. B) $3\times10^{-8}$. C) $6.63\times10^{34}$. D) $6.63\times10^{-34}$. Show Answer Correct Answer: D) $6.63\times10^{-34}$. 9. Which element was chosen as the standard reference for measuring atomic masses A) Carbon. B) Oxygen. C) Carbon-12 isotope. D) None of these. Show Answer Correct Answer: C) Carbon-12 isotope. 10. What is the symbol for BORON? A) Bn. B) Br. C) Bo. D) B. Show Answer Correct Answer: D) B. 11. The first person to propose a theory about an atom called the Atomic Theory was A) Democritus. B) Rutherford. C) Dalton. D) Aristotle. Show Answer Correct Answer: C) Dalton. 12. What is the atomic number for an element with 41 neutrons and a mass number of 80? A) 39. B) 41. C) 80. D) 121. Show Answer Correct Answer: A) 39. 13. A(n) is the building block of matter. A) Nucleus. B) Atom. C) Proton. D) Electron. Show Answer Correct Answer: B) Atom. 14. Electrons are found in the nucleus of the atom A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. Who discovered that atoms are mostly empty space? A) Dalton. B) Thomson. C) Rutherford. D) Bohr. Show Answer Correct Answer: C) Rutherford. 16. Ca(NO3)2 A) Calcium Carbonate. B) Calcium Nitrate. C) Magnesium Acetate. D) None of the above. Show Answer Correct Answer: B) Calcium Nitrate. 17. Which subatomic particle is the smallest by far? A) Protons. B) Neutrons. C) Electrons. D) All are small, but equal in size. Show Answer Correct Answer: C) Electrons. 18. In isotopes of an element, the difference is in the number of A) Protons. B) Electrons. C) Neutrons. D) Protons and electrons. Show Answer Correct Answer: C) Neutrons. 19. Which of the following elements contains only two electrons in the outermost shell? A) Helium. B) Beryllium. C) Magnesium. D) All of these. Show Answer Correct Answer: D) All of these. 20. Matter is made up of atoms A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. Which scientist proposed the idea that electrons orbit the nucleus in set energy levels? A) Bohr. B) Dalton. C) Rutherford. D) Thomson. Show Answer Correct Answer: A) Bohr. 22. Which of the following best describes a proton? A) It has no charge and makes up part of the mass in an atom. B) It has a negative charge and makes up part of the mass in an atom. C) It has a positive charge and makes up part of the mass in an atom. D) Tacos, always tacos. Show Answer Correct Answer: C) It has a positive charge and makes up part of the mass in an atom. 23. This element has 20 neutrons and 19 positively charged particles A) Kr. B) K. C) Rb. D) Xe. Show Answer Correct Answer: B) K. 24. The ionization energy of hydrogen atom in its ground state is A) 3.4 e V. B) 10.2 e V. C) 13.6 e V. D) -13.6 e V. Show Answer Correct Answer: C) 13.6 e V. 25. How many orbitals are there in n=3 shell? A) 9. B) 6. C) 3. D) 8. Show Answer Correct Answer: A) 9. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 1Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 2Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 3Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 4Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 5Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 6Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 7Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 9Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 10Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books