CHM205

1. Bacteria which convert nitrogen compounds into free nitrogen are known as ___________ bacteria

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

3. Nitriles are oxidized to nitrates by ___________

4. Lead dioxide is used as ___________

5. ____________ has the highest electronegativity value

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

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

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

9. Zeolites are also called ____________

10. The only halogen that can oxidize chlorine is __________

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

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

13. Solid Carbondioxide is known as____________

14. The molecular formula of hydrazine is ________

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

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

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

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

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

20. PVC pipes are manufactured using ____________

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

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

23. _____________ is the only liquid halogen.

24. The most metallic element in group IV is __________

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

26. The purest form of silicon dioxide is ___________

27. Mixed chloroflorocarbons are known as _________

28. All group V elements except ____________ react with sulphur to form sulphides.

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

30. Zeolites is used in water as____________

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

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

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

34. The heavier elements of group IV functions as ___________

35. Which of these is not an interstitial carbide?

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

37. Nitrogen is obtained commercially from ___________

38. Arsenic has a _____________ odour

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

40. The hybridization of nitrogen in ammonia is ___________

41. The ground state electronic configuration of phosphorus is ___________

42. Which of these is true of interstitial carbide?

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

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

45. The form of carbon that conducts electricity is _________

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

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

48. The halogen _______ is solid at room temperature

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

50. Silicates are salts of______