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Q. |
At iron changes its BCC structure to FCC. |
A. | 308oc |
B. | 568oc |
C. | 771oc |
D. | 906oc |
Answer» D. 906oc | |
Explanation: similar to metallic crystals, a few non-metallic crystals also change form due to temperature and pressure differences. this process is termed as polymorphism. iron changes from bcc at room temperature to fcc form at 906oc. |
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