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Silicates

Quartz is fra...

Question

Quartz is framework silicate with $S i O_{4}$ tetrahedral arranged in spirals.

A

True

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B

False

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Solution

The correct option is A True
Quartz is a framework silicate with $S i O_{4}$ tetrahedral arranged in spirals. The spirals can turn in a clockwise or anti-clockwise direction this feature results in there being two mirror images, optically active, varieties of quartz.

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COMPREHENSION # 1

The name 'Silica' covers an entire group of minerals, which have the general formula $S i O_{2}$ , The most common of which is quartz. Quartz is a framework silicate with $S i O_{4}$ tetrahedral arranged in spirals. the spirals can turn in a clockwise or anticlockwise direction a feature that results in there being two mirror images, optically active, varieties of quartz.

The following pictures represent various silicate anions. Their formulae are respectively:

Q. The silicate anion in the mineral kinoite is a chain of three

S i O_{4}^{- 4}

tetrahedral, that share corners with adjacent tetrahedral. The charge of the silicate anion is:

O

- atoms are shared per

S i O_{4}

tetrahedral in silicate anion of beryl mineral?

[S i O_{4}]^{4 -}

has tetrahedral structure, the silicate formed by using the three oxygen has:

Read the following short write-up and answer the questions at the end of it The name 'silica' covers an entire group of minerals, which have the general formula

S i O_{2}

, the most common of which is quartz. Quartz is a framework silicate with

S i O_{4}

tetrahedra arranged in spirals. The spirals can turn in a clockwise or anticlockwise direction- a feature that results in there being two mirror images, optically active, varieties of quartz.

The following pictures represent various silicate anions. Their formulae for silicon and oxygen respectively:

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