NCERT Class 9 Science Chapter 4 Structure of the Atom Solutions
NCERT Class 9 Science Chapter 4 Structure of the Atom Solutions GENERAL SCIENCE TEXTUAL QUESTIONS AND ANSWERS INTEX QUESTIONS AND ANSWERS Textbook Page No. 47 1. What are canal rays? Ans.These are positively charged radiations that consist of particles having charges equal in magnitude. Canal rays can also be described as the beam of positive ions obtained by gas-discharge tubes. The mass of canal particles is extremely more than that of electrons, it is about times larger. 2. If an atom contains one electron and one proton, will it carry any charge or not? Ans. An electron is a negatively charged particle, whereas a proton is a positively charged particle. The magnitude of their charges is equal. Therefore, an atom containing one electron and one proton will not carry any charge. Textbook Page No. 49. 1. On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole. Ans. On the basis of Thomson’s model of an atom, the positive charges present in an ...