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Question

List -I List -2
A. The purest form of SiO2 1. Quartz
B. Carborundum 2.Graphite
C. Corundum 3. SiC
D. Hexagonal rings 4. Al2O3
5. Diamond
Correct match with A B C D is:

A
1 3 4 2
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B
3 1 4 2
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C
1 3 2 4
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D
3 1 4 3
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Solution

The correct option is C 1 3 4 2
Quartz is the crystalline form of SiO2 and hence is the purest form.
Carborundum is the commercial name of SiC.
Corundum is an ore of Aluminium with the chemical formula Al2O3
Graphite has a sheet like structure, with each layer made of hexagonal rings.

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