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The element present in the largest amount in rocks and minerals is

A. Carbon

B. Hydrogen

C. Aluminium

D. Silicon

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  18. Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
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  20. Which of the following elements is obtained from sea weeds ?
  21. According to Daltons atomic theory the smallest particle which can exist independently is
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  24. Quartz crystals normally used in quartz clocks etc. is chemically
  25. The metal that is present in Photo Films is
  26. Bromine is
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