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Read the following passage and answer th...

Read the following passage and answer the questions followed by is silicates are a group of minerals which have the general formula `SiO_(2)`, the most common of which is quartz. Quartz is a frame work silicate with `SiO_(4)`, tetrahydra arranged in spirals. The spirals can turn in clockwise or anticlock wise direction a feature that results in there being two mirror images opticlaly active varities of quartz.
The silicate anion in the mineral kinoite is a chain of three `SiO_(4)`, tetrahedra that share coners with adjacent tetrahedra. The mineral also contain `Ca^(2+),Cu^(2+)` ions and water molecules in 1 : 1 : 1 ratio. The mineral is represented as

A

`CaCuSi_(3)O_(10). H_(2)O`

B

`CaCuSi_(3)O_(10).2H_(2)O`

C

`Ca_(2)Cu_(2)SiO_(3)O_(10).2H_(2)O`

D

`Ca_(2)CuSi_(3)O_(10).4H_(2)O`

Text Solution

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The correct Answer is:
C
Mineral is `Ca_(2) Cu_(2) SiO_(3)O_(10). 2H_(2)O`
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