As per Mohs's scale, the hardnesses of Quartz & Topaz (in that order) are: ?

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Ram Avtar Sharma

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📊 Geotechnical Engineering

Q. As per Mohs's scale, the hardnesses of Quartz & Topaz (in that order) are: ?

(A) 7 & 8
(B) 8 & 7
(C) 9 & 10
(D) 10 & 9

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✅ Correct Answer: (A) 7 & 8

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