This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 43 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 43 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. To which electrode is cathode attached A) Negative Terminal. B) Positive Terminal. C) None. D) None of the above. Show Answer Correct Answer: A) Negative Terminal. 2. JJ Thomson proved that the ray's originating from the cathode are made up of ..... A) Negatively charged particles. B) Positively charged particle. C) Charge less particle. D) Positrons. Show Answer Correct Answer: A) Negatively charged particles. 3. Who proposed the planetary model of the atom? A) Niels Bohr. B) Ernest Rutherford. C) J.J. Thomson. D) James Chadwick. Show Answer Correct Answer: B) Ernest Rutherford. 4. The postulates of Dalton's Atomic Theory did not satisfy A) Isotopes. B) Isobars. C) The fact that atom is divisible. D) All of these. Show Answer Correct Answer: D) All of these. 5. Particles are packed tightest in a A) Solid. B) Liquid. C) Gas. D) Plasma. Show Answer Correct Answer: A) Solid. 6. Which electromagnetic waves have the highest frequencies and the shortest wavelengths? A) Microwaves. B) Visible light. C) Gamma rays. D) None of the above. Show Answer Correct Answer: C) Gamma rays. 7. What is the shape of an s orbital? A) Spherical. B) Dumbbell. C) Clover. D) Elliptical. Show Answer Correct Answer: A) Spherical. 8. "Energy Levels" = ..... A) Groups. B) Periods. C) Atoms. D) Elements. Show Answer Correct Answer: B) Periods. 9. The second electron shell can old how many electrons? A) 8. B) 2. C) 6. D) 4. Show Answer Correct Answer: A) 8. 10. S, p, d, f are representation of which quantum number A) N. B) L. C) M. D) S. Show Answer Correct Answer: B) L. 11. What is the electrical property of some objects that determines whether the object is positive, negative, or neutral? A) Density. B) Mass. C) Charge. D) Atom. Show Answer Correct Answer: C) Charge. 12. How many unpaired electrons does an atom of chromium contain A) 2. B) 7. C) 6. D) 5. Show Answer Correct Answer: C) 6. 13. A positively charged particle in the nucleus of an atom is a ..... A) Electron. B) Neutron. C) Proton. D) None of the above. Show Answer Correct Answer: C) Proton. 14. Which experiment led to the discovery of the nucleus in an atom? A) Thomson's Cathode Ray Experiment. B) Rutherford's Gold Foil Experiment. C) Millikan's Oil Drop Experiment. D) Bohr's Hydrogen Spectrum Experiment. Show Answer Correct Answer: B) Rutherford's Gold Foil Experiment. 15. What is the electrical charge of a neutron? A) Positive. B) Negative. C) Netural. D) All of the above. Show Answer Correct Answer: C) Netural. 16. To which group does Arsenic belong A) 13. B) 14. C) 15. D) 16. Show Answer Correct Answer: C) 15. 17. This subatomic particle has a neutral charge. A) Proton. B) Neutron. C) Electron. D) None of the above. Show Answer Correct Answer: B) Neutron. 18. DIFFERENT kinds of atoms chemically combined to form a substance are A) Mixture. B) Element. C) Compound. D) Substance. Show Answer Correct Answer: C) Compound. 19. In the nucleus of $^{40}$$_{20}$Ca, there are A) 40 protons and 20 electrons. B) 20 protons and 40 electrons. C) 20 protons and 20 neutrons. D) 20 protons and 40 neutrons. Show Answer Correct Answer: C) 20 protons and 20 neutrons. 20. The scientist known as the Father of Electricity is A) Sir Humphry Davy. B) Ernest Rutherford. C) John Dalton. D) Michael Faraday. Show Answer Correct Answer: D) Michael Faraday. 21. WHO DISCOVERED ELECTRONS A) J.J.THOMSON. B) E.GOLDSTEIN. C) RUTHERFORD. D) CHADWIK. Show Answer Correct Answer: A) J.J.THOMSON. 22. Assertion:All elements have extra neutrons in themReason:Extra neutrons increase nuclear attraction force A) Both A nd R-True. B) Both A and R-False. C) A is true, R is false. D) A is false, R is true. Show Answer Correct Answer: D) A is false, R is true. 23. For each metal, there is a characteristic minimum frequency, below which photoelectric effect is not observed. This is called A) Threshold frequency. B) Bohr frequency. C) Work function. D) Initial frequency. Show Answer Correct Answer: A) Threshold frequency. 24. If an electron is moving with a velocity 600m/sec which is accurate upto 0.005%, then calculate the uncertainty in its position. A) 3X10$^{-2}$ m. B) 1.93X10$^{-3}$ m. C) 5.67X10$^{-2}$ m. D) 3X10$^{-8}$m. Show Answer Correct Answer: B) 1.93X10$^{-3}$ m. 25. An orbital can at most hold how many electrons? A) 1 electron. B) 2 electrons. C) 3 electrons. D) 4 electrons. Show Answer Correct Answer: B) 2 electrons. ← 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