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FUNDAMENTALS OF CHEMISTRY MCQS class 9 SET 2

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1. The mass number of an atom is




2. A mole of any substance contains




3. The relative atomic mass of Na is




4. The mass of an atom relative to C-12 is




5. Over 70% of earths crust is covered with




6. The list which contains only elements is




7. The formula mass indicates the simplest ration between




8. The smallest part of an element that cannot exist as a free state is




9. A free radical has




10. Branch of chemistry dealing with the plantation and overcoming greenhouse effect is




11. 1 mole of a substance refers to




12. The number of protons in the nucleus constitute its




13. Compounds have atoms of




14. An oxide ion has -2 charge because




15. Which of the following is present in vinegar?




16. The molecular formula gives




17. 6022 * 1023 atoms of Sulphur contains




18. An ionic compound is electrically




19. Gram molecular mass of C6H12O6 is




20. In glucose the simplest ratio between C H and O is




21. The formula mass of NaCl is




22. Species present in a substance refers to




23. If one mole of carbon contains x atoms then the number of atoms in 12g of Mg are




24. A science that examines the material this universe contains and changes in them is called




25. The molecular mass of glucose is




26. Negatively charged ions are called




27. The number of atoms of hydrogen in 2 moles of NH3




28. The number of atoms in 5 moles of nitrogen atom is




29. The branch of chemistry which deals with a substance containing carbon is called




30. The mass of 1 mole of sucrose is




31. The matter is anything that occupies




32. The formula which gives the simplest whole-number ratio of atoms is




33. The mass of carbon present in 44g of carbon dioxide is




34. The substance which has a formula mass of 1335 amu is




35. Cookies and bread rise due to




36. A free radical has




37. When halogens are exposed to sunlight they split up in to




38. The gram atomic mass of Zn is




39. A substance whose all atoms have the same atomic number is




40. A hydrogen atom is




41. A balloon filled with 5g of hydrogen contains




42. The number of protons and neutrons in the nucleus if the atomic number of an element is 17 and the mass number is 35 is