Part-A: I. Answer any ten of the following. Each question carries 1 mark. 10×1 = 10 1. Name the SI unit of amount of substance. 2. Write the relation between enthalpy change and internal energy change. 3. Which quantum number corresponds to the period number in the modern periodic table? 4. Write the Lewis dot structure of CO molecule. 5. What is the oxidation number of oxygen in peroxides? 6. What is the molecular formula for heavy water? 7. Mention one biological importance of potassium. 8. Which alkaline earth metal gives brick red colour to the flame? 9. What is the shape of Buckminster Fullerene? 10. Name the gas which forms complex carboxy haemoglobin. 11. Which gas is liberated in Dumas Process? 12. Name the first organic compound prepared in laboratory from inorganic compound by F Wohler. 13. Mention the catalyst in Friedel-craft’s alkylation? 14. Write the significance of Biochemical oxygen demand (BOD). 15. What is acid rain?
Part-B: II. Answer any five of the following. Each question carries 2 marks. 5×2=10 16. Mention any two properties of cathode rays? 17. What are exothermic processes? Give an example. 18. What are Transuranium elements? Give an example. 19. The dipole moment of BeF2 is zero. Give reason. 20. What is hydrogen bond? Mention the type of hydrogen bonding involved in o-nitrophenol. 21. What displacement reaction? Give an example. 22. Give reasons: i) Concentrated nitric acid transferred in aluminium container. ii) Silicon forms p-type semi-conductor. 23. Write the bond line formula and IUPAC name of the compound o-dibromo benzene. 24. Draw the staggered conformation of ethane. 25. Name any two gases causing global warming.
Similar Searches: i puc question papers for karnataka board, i puc question papers 2021, 1st puc question papers, 1st puc question papers with answers, 1st puc question papers with answers 2021, 1st puc question papers commerce 2021, 1st puc question papers 2021, 1st puc question papers with answers 2021, 1st puc question papers accountancy, 1st puc question papers arts, 1st puc model question papers arts 2021, 1st puc question papers karnataka biology, 1st puc question papers karnataka board, 1st puc annual exam question papers biology, 1st puc question papers commerce, 1st puc question papers commerce, 1st puc question papers chemistry, 1st puc question papers commerce, 1st puc model question papers commerce, 1st puc model question papers commerce, 1st puc model question papers commerce, ii puc question papers, ii puc question bank, 1st puc question papers download, puc question papers download, 1st puc question papers economics karnataka, 1st puc previous year question papers english, i puc electronics model question papers, 1st puc question papers for commerce
Have a question? Please feel free to reach out by leaving a comment below
