Punjab 9th Class Chemistry Chapter 2 Structure of Atoms Mcqs Test Online Punjab 9th Class Chemistry Chapter 2 Structure of Atoms 9th Class Punjab 12345678910Chemistry 1. Which of the following statement is not correct about isotopes? They have sane atomic number They have same chemical properties They have sane number of protons They have same physical propertiesQuestion 1 of 10 2. Rutherford used _____________ particles in his experiments. He⁻²He⁺ He⁺² He atoms Question 2 of 10 3. Which isotope is used in nuclear reactors? All of theseU-235 U-238 U-234 Question 3 of 10 4. Chlorine has two isotopes, both of which have Same mass number Same number of electronsSame number of neutrons Different number of protons Question 4 of 10 5. A sub-shell that can accommodate 6 electrons is: fp s d Question 5 of 10 6. M shall has sub-shells:2s, 2p 3s, 3p, 3d 1s, 2s 1s, 2s, 3sQuestion 6 of 10 7. Which isotope is commonly used to irradiate cancer calls? Carbon-14 Iodine-131Iodine-123 Cobalt-60 Question 7 of 10 8. Number of neutrons in ²⁷₁₃ M are: 1514 13 27 Question 8 of 10 9. According to Bohr atomic model: Light is absorbed when an electron jumps a lower energy orbit. The further the electron is form the nucleus, the more energy it has The energy of the electron is inversely proportional to its distance from the nucleus. Each orbit has fixed energy, so each orbit is called sub-energy level Question 9 of 10 10. ₁₁Na has electronic configuration: 1s²2s²2p⁵3s² 1s²2s²2p⁶3s¹1s²2s²2p⁷ 1s²2s²3s¹ Question 10 of 10 Loading... Test By Subject Punjab Test By Topics 9th Class Chemistry You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.