CHM205

1. Of all halogens, _____________ has the highest ionization energy

2. The oxide of nitrogen which is colourless and rather unreactive is _________

3. A derivative of ------------- is used in making photographic plates

4. Continuous exchange of nitrogen between the atmosphere and the biosphere is called ___________

5. Which of the group V elements give only one oxidation state?

6. The second most abundant element in the earth’s crust after oxygen is __________

7. Which of these is not a component of lead-acid battery?

8. Teflon is form from a derivative of-------------

9. The ground state electronic configuration of phosphorus is ___________

10. When carbon is linked to elements of lower or approximately the same electronegativity,the binary compounds formed are termed

11. The group of elements in the periodic table that is associated with semiconductor properties is ___________

12. ____________is a property by virtue of which elements form long chain compounds by single or multiple bonds between atoms of the same element.

13. Deficiency of one of these leads to goitre in humans

14. The form of carbon that conducts electricity is _________

15. The purest form of silicon dioxide is ___________

16. Hydrazine is used as a ________ along with liquid air or oxygen as oxidant.

17. Arsenic has a _____________ odour

18. The halogen _______ is solid at room temperature

19. The molecular formula of hydrazine is ________

20. Which of these is not a group V element?

21. The hybridization of nitrogen in ammonia is ___________

22. The halogen which has only two complete electron shells below the valence shell is _______

23. ___________ is obtained when of silicates mainly of sodium and calcium is melted and supercooled

24. Which of these is not a carbide?

25. ___________are the fibrous silicates, having high tensile strength and heat/fire resistance, used as insulators and steam pipe lagging.

26. One of these is not a form of silica?

27. Of the group IV element, the one that exhibits anomalous behaviour is ___________

28. Mixed chloroflorocarbons are known as _________

29. Zeolites is used in water as____________

30. Which of these is true of interstitial carbide?

31. Conversion of nitrogen into its compounds is known as _________

32. A derivative of ____________ is used in making photographic plates

33. Which of these is not an interstitial carbide?

34. Lead dioxide is used as ___________

35. The only halogen that can oxidize chlorine is __________

36. The element known as ‘super halogen’ is _________

37. Ammonia acts as a Lewis base because it possesses a _________

38. The most metallic element in group IV is __________

39. The ‘great balls of carbon’ in which carbon atoms are symmetrically arranged in closed shells are known as __________

40. PVC pipes are manufactured using ____________

41. _____________ is the only liquid halogen.

42. Which of these is not a raw material for the cement manufacture?

43. Which of the group V metals can not be obtained from its sulphide ore?

44. Solid Carbondioxide is known as____________

45. The heavier elements of group IV functions as ___________

46. Silicates are salts of______

47. ____________ has the highest electronegativity value

48. Nitriles are oxidized to nitrates by ___________

49. Nitrogen is obtained commercially from ___________

50. Elements having some metallic and nonmetallic properties are called _______