Which from the following is NOT polymorphic form of silica ?

Question

Given below are two statements:
Statement I: The electronegativity of group 14 elements from Si to Pb gradually decreases.
Statement II: Group 14 contains non-metallic, metallic, as well as metalloid elements.
In the light of the above statements, choose the most appropriate from the options given below:

Answer 1

Step 1: Match each mineral to its formula
Cristobalite = SiO$_2$. Quartz ($\alpha$ and $\beta$) = SiO$_2$. Aragonite = CaCO$_3$.

Step 2: Pick the odd one
Only aragonite is a carbonate, so it is the one that is not a polymorph of silica.

Final Answer:
Aragonite is CaCO$_3$, not silica, option (D). \[ \boxed{\text{Aragonite}} \]

Which from the following is NOT polymorphic form of silica ?

Show Hint

The Correct Option is D

Solution and Explanation

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