$Kieselghur$ is an amorphous form of silica which is used in filtration plants. Which of the following is true about it?

  • A
    It is a crystalline form of $SiO_2$.
  • B
    It is an amorphous form of $SiO_2$.
  • C
    It is a form of $CO_2$.
  • D
    It is a synthetic polymer.

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