This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 32 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The frequency of violet light is 7.5x10$^{14 }$Hz. What is its wavelength? A) 4.0x10$^{-7}$ m. B) 4.0x10$^{7}$ m. C) 2.25x10$^{23}$m. D) 2.25x10$^{23}$ Hz. Show Answer Correct Answer: A) 4.0x10$^{-7}$ m. 2. Valency of oxygen is A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 3. Identify an element with two shells and five electrons in the valence shell. A) Nitrogen. B) Oxygen. C) Phosphorous. D) Silicon. Show Answer Correct Answer: A) Nitrogen. 4. The only subatomic particle that carries a positive charge is the ..... A) Electron. B) Nucleus. C) Neutron. D) Proton. Show Answer Correct Answer: D) Proton. 5. The electronic configuration of an element is 2, 8, 5. What is its valency? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: C) 3. 6. The number of valence electrons in an element affects the reactivity of that element. Which element listed has the fewest valence electrons? A) Beryllium (Be). B) Sodium (Na). C) Oxygen (O). D) Neon (Ne). Show Answer Correct Answer: B) Sodium (Na). 7. Plum pudding model was given by: A) JJ THOMSON. B) CHADWICK. C) RUTHERFORD. D) None. Show Answer Correct Answer: A) JJ THOMSON. 8. The electrons present in the outermost shell are called A) Valency electrons. B) Octet electrons. C) Duplet electrons. D) Valence electrons. Show Answer Correct Answer: D) Valence electrons. 9. On moving down the group, the shielding effect A) Increases. B) Decreases. C) Remains the same. D) None of these. Show Answer Correct Answer: A) Increases. 10. An element has the mass number 12 and atomic number 6. What is the number of neutron A) 6. B) 4. C) 10. D) 8. Show Answer Correct Answer: A) 6. 11. A calcium ion has 20 neutrons, 20 protons, and 18 electrons. What is the ion's charge? A) 2+. B) 1+. C) 2-. D) 1-. Show Answer Correct Answer: A) 2+. 12. How many electrons in an atom can have n + l = 5 A) 6. B) 18. C) 36. D) 54. Show Answer Correct Answer: B) 18. 13. How many electrons total are found in the f orbital? A) 2. B) 6. C) 10. D) 14. Show Answer Correct Answer: D) 14. 14. Violet light has graeter ..... than red light? A) Frequency. B) Wavelength. C) Velocity. D) Density. Show Answer Correct Answer: A) Frequency. 15. If ionising energy of H atom is 13.6 eV, then the second ionising energy of He should be A) 13.6 e V. B) 27.2 e V. C) 54.4 e V. D) Cannot be predicted. Show Answer Correct Answer: C) 54.4 e V. 16. Which of the following is not a feature of a chemical reaction? A) Evolution of gas. B) Occurrence of rain. C) Absorption of heat. D) None of the above. Show Answer Correct Answer: B) Occurrence of rain. 17. Most of the $\alpha$-particles passed through the gold foil without getting deflected, this shows that (select the most appropriate one) A) Most of the space inside the atom is empty. B) The positive charge of the atom occupies very little space. C) All the positive charge and mass of the gold atom were concentrated in a very small volume within the atom. D) None. Show Answer Correct Answer: A) Most of the space inside the atom is empty. 18. .Which of the following describes an isotope with a mass number of 99 that contains 56 neutrons in its nucleus? A) $^{99}$Ba$_{56}$. B) $^{43}$Ba$_{56}$. C) $^{99}$Tc$_{43}$. D) $^{56}$Tc$_{43}$. Show Answer Correct Answer: C) $^{99}$Tc$_{43}$. 19. The following quantum number are possible for how many orbitals? n = 4, l = 1, m = +2 A) 1. B) 2. C) 3. D) 6. Show Answer Correct Answer: A) 1. 20. Which of the following elements is Paramagnetic? A) P. B) Q. C) R. D) S. Show Answer Correct Answer: A) P. 21. The smallest particle with characteristics of an element is known as the A) Periodic Table. B) Atom. C) Proton. D) Electron. Show Answer Correct Answer: B) Atom. 22. Which statement correctly describes the location and charge of neutrons in an atom? A) The neutrons are inside the nucleus and have a negative charge. B) The neutrons are outside the nucleus and have a neutral charge. C) The neutrons are inside the nucleus and have a neutral charge. D) The neutrons are outside the nucleus and have a negative charge. Show Answer Correct Answer: C) The neutrons are inside the nucleus and have a neutral charge. 23. Elements are defined by the number of ..... they possess. A) Neutrons. B) Protons. C) Electrons. D) Particles. Show Answer Correct Answer: B) Protons. 24. Atoms of the same element that have different numbers of electrons A) Ion. B) Isotope. C) Nucleus. D) Electron cloud. Show Answer Correct Answer: A) Ion. 25. 1) The radii of Bohr orbit are directly proportional to ..... A) Principal quantum number. B) Square of principal quantum number. C) Cube of principal quantum number. D) Independent of principal quantum number. Show Answer Correct Answer: B) Square of principal quantum number. ← 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 8Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 9Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books