The following type of silicate are used for electrical insulation :
A
Sheet silicate
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B
chain silicate
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C
neso silicate
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D
cyclic silicate
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Solution
The correct option is A Sheet silicate The chemical formula of the silicates given are I- Sheet Silicate Si4O10 II- Chain Silicate Si4O−611 or Si2O−46 III- Nesosilicate SiO−44 IV- Cyclosilicate Si6O−1218 Since there is no charge on sheet silicate so it is used for electrical insulation.