$S i O_{2}$ (Silica) occurs in the form of:

sand

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quartz

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opal

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all of these

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Solution

The correct option is D all of these
Silica also known as silicon dioxide. It is found in nature as quartz, sand or opal. Silica more so than almost any material exists in many crystalline forms called polymorphs. Silica in the form of sand is used as ingredient in sand casting.

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$(S i O_{2})$ $(S i O_{2})$ $(S i O_{2})$

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SiO2 (Silica) occurs in the form of:

The correct option is D all of theseSilica also known as silicon dioxide. It is found in nature as quartz, sand or opal. Silica more so than almost any material exists in many crystalline forms called polymorphs. Silica in the form of sand is used as ingredient in sand casting.

$S i O_{2}$ (Silica) occurs in the form of:

The correct option is D all of these
Silica also known as silicon dioxide. It is found in nature as quartz, sand or opal. Silica more so than almost any material exists in many crystalline forms called polymorphs. Silica in the form of sand is used as ingredient in sand casting.