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CBSE Class 12-science Answered

How can we convert quartz into glass??
Asked by | 22 Feb, 2009, 05:03: PM
Expert Answer

We  can convert quartz into glass by heating it below 1000o C.

Answered by | 27 Feb, 2009, 09:23: AM
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CBSE 12-science - Chemistry
what is the efficiency power of Fcc unit cell
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In diamond C atoms occupy FCC lattice points as well as alternate tetrahedral voids the edge length of unit of unit cell is 356.7pm.Calculate the closest distances between C atom and the fraction of total volume occupies by C atom.
Asked by sardaarjii2012 | 31 Oct, 2021, 09:05: PM
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CBSE 12-science - Chemistry
metal crystallises in BCC structures atomic mass of the metal is 55.8g\mol calculate edge length of unit cell of the metal
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CBSE 12-science - Chemistry
In a FCC lattice , atoms A occupy the corner positions and atoms B occupy the face centre positions. If one atom of B is missing from one of the face centred points, calculate the formula of the compound
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CBSE 12-science - Chemistry
cation A occupies 2/3rd of all the octahedral voids while the anion B is found in all lattice points predict the formula of the ionic compound formed by them
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CBSE 12-science - Chemistry
The unit cell of Na is bcc and its density is 0.97. What is the radius of a sodium atom if the molar mass of Na is 23?
Asked by arushidabhade | 17 Mar, 2021, 01:24: PM
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CBSE 12-science - Chemistry
why does salt appear yellow in colour when Na vapours are passed over it ?
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  What is the formula of a compound in which the element Y forms hcp lattice and atoms of X occupy 2/3rdof tetrahedral voids
Asked by thakurranjan54 | 08 Feb, 2021, 06:32: PM
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