CHEMISTRY(9-10)2010

1. What is the name of a naturally occurring unrefined petroleum product composed of hydrocarbon deposits and other organic materials?

 
 
 
 

2. What are the compositions of coal? It is mainly composed of

 
 
 
 

3. Industrially ethanol can be prepared by

 
 
 
 

4. Which of the following is true about the homologous series? The homologous series is

 
 
 
 

5. In which solvent will both alkenes and alknes dissolve?

 
 
 
 

6. What is the molecular formula for butanal?

 
 
 
 

7. What are oxides? They are

 
 
 
 

8. Which of the following is NOT true about the chemical property of acid anhydrides? They react with

 
 
 
 

9. Amphoteric oxides

 
 
 
 

10. Oxides that have neither acidic nor basic properties are____

 
 
 
 

11. The spatial arrangement of atoms or groups about a double bond is known as  ___isomerism.

 
 
 
 

12. What is the addition product formed when a mixture of benzene vapor and hydrogen is passed over finely divided nickel catalyst at 200 C?

 
 
 
 

13. A student took three different test tubes and added 5 ml of toluene (methylbenzene) to each test tube. Then, added 2 drops of Br2 in CC14 in the 1st test tuve, 2 drops of KMnO4 in the 2nd test tube and 2 drops of concentrated H2SO4 in the 3rd test tube. In which test tube does a reaction occur? In the_____   test tube(s).

 
 
 
 

14. Natural gas is mainly composed of

 
 
 
 

15. Which of the following information can easily be obtained by just looking at the periodic table?

 
 
 
 

16. Why atoms form a chemical bond? To

 
 
 
 

17. Which of the following statement is true?

 
 
 
 

18. What is an ionic bond? It is

 
 
 
 

19. Which of the following is NOT the postulate of modern atomic theory? Atoms

 
 
 
 

20. One of the following statements is accepted by both Dalton’s and Modern atomic theories. Which one is it?

 
 
 
 

21. The existence of neutrons was discovered by

 
 
 
 

22. What is the relative electric charge of an electron?

 
 
 
 

23. Which of the following is true about the properties of ionic compounds? They

 
 
 
 

24. A bond formed when atoms in a molecule share electron pairs is ____

 
 
 
 

25. The inter – molecular attraction between a partially positive hydrogen atom in one molecule and the partially negative atom in another molecule is

 
 
 
 

26. The statement ‘’Matter is neither created nor destroyed during a chemical reaction.’’ is the law of

 
 
 
 

27. The quantum mechanical description for the arrangement of electrons of an atom in atomic orbitals in order of increasing energy is known as _____

 
 
 
 

28. The common name for group VIIA elements is

 
 
 
 

29. What is the number of groups and periods in the modern periodic table respectively?

 
 
 
 

30. Which of the following is NOT the industrial application of electrolysis?

 
 
 
 

31. Natural resources are

 
 
 
 

32. Which one of the following natural resources is renewable?

 
 
 
 

33. Which of the following is NOT the general characteristic of industries? They

 
 
 
 

34. Which step in the manufacturing of pulp and paper is used to remove coloring matter from wood pulp?

 
 
 
 

35. What is the negative logarithm of hydrogen (hydronium) ion concentration?

 
 
 
 

36. What is a strong base? It is a base that

 
 
 
 

37. Of the following methods, which one is a traditional food preservation method?

 
 
 
 

38. Which of the following pollution is NOT common?

 
 
 
 

39. Which of the following method can be used to reduce water pollution?

 
 
 
 

40. Converting potentially dangerous chemical wastes into harmless substances, by combustion or by other chemicals means is one the main methods used to reduce

 
 
 
 

41. Suppose that our teacher gave you a chance to visit a nearby cement industry. After the visit, you are expected to write a report about its environmental impact. What will be your main concern in your report?

 
 
 
 

42. What is the function of phosphorus in the growth of plants? It is used

 
 
 
 

43. What is the difference between metallic and electrolytic conductivity?

 
 
 
 

44. Electrolysis is a

 
 
 
 

45. The strips of metals or graphite that allow electrons to leave or enter the electrolyte are known as ._____

 
 
 
 

46. Which one of the following statements is rue about electrolytic and galvanic cells?

 
 
 
 

47. Which one of the following statements is true about electrolytic and galvanic cells?

 
 
 
 

48. Why does an increase in temperature affect the rate of a reaction? Because, reactant molecules collide

 
 
 
 

49. Consider the following reaction that takes place inside a sealed reaction chamber.

2KC1O3(s)  →2KC1(s) + O2(g)

 
 
 
 

50. Reactions which can take place in both forward and backward directions are called ___

 
 
 
 

51. According to the kinetic molecular theory,

 
 
 
 

52. The following equation represents the oxidation of a ammonia.

NH3 + O2  →NO + H2O

 
 
 
 

53. In an endothermic reaction

 
 
 
 

54. Charles’ law states that

 
 
 
 

55. The migration or intermingling of molecules of different gases as a result of random molecular motion is known as ______

 
 
 
 

56. The evaporation of a liquid depends on

 
 
 
 

57. How do you define oxidation in terms of electron transfer? It is the

 
 
 
 

58. Which one of the following statements is true about oxidizing and reducing agents?

 
 
 
 

Question 1 of 58

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