ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
CHM205
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1. Lead dioxide is used as ___________
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2. Solid Carbondioxide is known as____________
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3. The purest form of silicon dioxide is ___________
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4. A derivative of ____________ is used in making photographic plates
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5. The hybridization of nitrogen in ammonia is ___________
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6. The oxide of nitrogen which is colourless and rather unreactive is _________
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7. Deficiency of one of these leads to goitre in humans
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8. The second most abundant element in the earth’s crust after oxygen is __________
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9. Zeolites is used in water as____________
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10. The only halogen that can oxidize chlorine is __________
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11. Mixed chloroflorocarbons are known as _________
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12. One of these is not a form of silica?
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13. The ground state electronic configuration of phosphorus is ___________
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14. _____________ is the only liquid halogen.
15 / 50
15. The heavier elements of group IV functions as ___________
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16. Which of these is not a carbide?
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17. ___________are the fibrous silicates, having high tensile strength and heat/fire resistance, used as insulators and steam pipe lagging.
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18. Which of these is not a component of lead-acid battery?
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19. Teflon is form from a derivative of-------------
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20. Which of the group V elements give only one oxidation state?
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21. ____________ has the highest electronegativity value
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22. Which of these is not a group V element?
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23. A derivative of ------------- is used in making photographic plates
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24. The molecular formula of hydrazine is ________
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25. The halogen _______ is solid at room temperature
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26. Conversion of nitrogen into its compounds is known as _________
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27. Of the group IV element, the one that exhibits anomalous behaviour is ___________
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28. Ammonia acts as a Lewis base because it possesses a _________
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29. Which of these is not a raw material for the cement manufacture?
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30. Which of these is true of interstitial carbide?
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31. Nitriles are oxidized to nitrates by ___________
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32. ____________is a property by virtue of which elements form long chain compounds by single or multiple bonds between atoms of the same element.
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33. The form of carbon that conducts electricity is _________
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34. The halogen which has only two complete electron shells below the valence shell is _______
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35. Arsenic has a _____________ odour
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36. The ‘great balls of carbon’ in which carbon atoms are symmetrically arranged in closed shells are known as __________
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37. Hydrazine is used as a ________ along with liquid air or oxygen as oxidant.
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38. Nitrogen is obtained commercially from ___________
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39. The element known as ‘super halogen’ is _________
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40. Silicates are salts of______
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41. Zeolites are also called ____________
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42. Of all halogens, _____________ has the highest ionization energy
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43. Which of the group V metals can not be obtained from its sulphide ore?
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44. PVC pipes are manufactured using ____________
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45. Continuous exchange of nitrogen between the atmosphere and the biosphere is called ___________
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46. The most metallic element in group IV is __________
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47. Which of these is not an interstitial carbide?
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48. ___________ is obtained when of silicates mainly of sodium and calcium is melted and supercooled
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49. Bacteria which convert nitrogen compounds into free nitrogen are known as ___________ bacteria
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50. The group of elements in the periodic table that is associated with semiconductor properties is ___________
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