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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Geology (GG)
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2 Answer(s)
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Rahul kumar
Yes, option (A) can also be correct because all three have different crystal systems. However the difference in the crystal system caused by the stability zone of all three are different.
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Rahul kumar
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Answer (A) & (C) Quartz, tridymite and crystobalite have similar chemical composition SiO2 but still have different specific gravity. The difference in their specific gravity is because of their stability fields. They are stable in different P-T conditions which lead to difference in their lattice structure and hence specific gravity is different.
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cannot it be option A as said by other tutor here
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bcoz crystal structure is responsible for density
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yes sir both A and C are correct
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thank u sir
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Sajan sarthak Best Answer
option A The changes in crystal structure lead to changes in the specific density: an increasing temperature corresponds to increasing vibrations of the atoms in the crystal lattice, and as these need more and more space, more open crystal structures are favored.
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Rahul kumar
The main reason behind different specific gravity is because of stability zones of all three are different. So, if it is a single option correct question then (C) will be more appropriate answer.