UncategorizedIdentify incorrect statement among the following?

Identify incorrect statement among the following?

  1. A

    Dry ice is used as a refrigerant

  2. B

    SiO2 is attaced by HF

  3. C

    SiO2 is not attacked by NaOH solution

  4. D

    amorphous form  of silica is kieselghur

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    Solution:

    SiO2 is attacked by both HF and NaOH

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