Question

Statement 1: Cyclic silicates and chain silicates have the same general molecular formula.
Statement 2: In cyclic silicates, three corners of each $Si{O}_4$ tetrahedron are shared while in chain silicates only two are shared with other tetrahedron.

• A. If both Statement 1 and Statement 2 are true and the . statement 2 is the correct explanation of the statement 1 .
• B. If both Statement 1 and Statement 2 are true but statement 2 is not the correct explanation of the statement 1 .
• C. If Statement 1 is true but Statement 2 is false.
• D. If Statement 1 is false but Statement 2 is true.

Answer 1

Answer: (C)

Cyclic silicate and chain silicate both have same general formula ${\left(Si{O}_3\right)}^{2-}$. In cyclic silicates oxygen atom is shared per tetrahedral and the basic unit is $S{i}_3{O}_9^{6-}$ chain silicates involve sharing of two oxygen atoms by each tetrahedral having basic unit ${\left(Si{O}_3\right)}_n^{2n-}$.