SECTION A: CHEMISTRY Q1. Rutherford's alpha scattering experiment resulted in the discovery of Q2. What are nucleons? Q3. An atom is electrically neutral. How can it become charged? Q4. Isotopes contain (a) Same nuclear charge but different mass number (b) nuclear charge but same mass number (c) Same nuclear charge and same mass number (d) number of neutrons Q5. Give an application of radioactive isotope ? Q6. The atomic number of phosphorus is 15. What is the electronic configuration Of P3-ion ? SECTION B: BIOLOGY Q1. Explain the process of osmosis and give an example. Q2. What are the functions of plastids? Q3. Explain the difference between Prokaryotic cell and Eukaryotic cell Q4. What are genes? What is the difference between genes and chromosomes? Q5. Why are lysosomes called suicidal bags? Q6 State two main causes of disease's Q7. Why sick person is advised to take rest? Q8. Give function of antibiotic penicillin. 09. What are disease specific means of prevention? Q10. What are basic conditions of good health? SECTION C. PHYSICS
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