Question
Which from the following is NOT polymorphic form of silica ?
MHT CET
Chemistry
p Block Elements (Group 13 & 14)
2026
MHT CET 2026 (17 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. Cristobalite
- B. - quartz
- C. - quartz
- D. Aragonite
Answer
D. Aragonite
Step-by-step solution
Silica (SiO_2) exists in various polymorphic forms such as quartz ( -quartz and -quartz), cristobalite, and tridymite. Aragonite is a naturally occurring crystalline form of calcium carbonate (CaCO_3), not silica. Therefore, Aragonite is not a polymorphic form of silica. Answer: Aragonite
Related: Chemistry — p Block Elements (Group 13 & 14) · All PYQ Banks