Asked: M.P.P.C.S. (Pre) 1992, 44th B.P.S.C. (Pre) 2000medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
सर्वाधिक कठोर तत्व निम्न में से कौन है?
Which of the following is the hardest element?
SELECT CORRECT OPTION:
A
हीरा
Diamond
Correct
B
सीसा
Lead
C
टंगस्टन
Tungsten
D
लोहा
Iron
Official Solution & Explanation:
Correct Answer: Option A(हीरा)
प्राकृतिक पदार्थों में हीरा (Diamond, कार्बन का एक क्रिस्टलीय अपररूप) सर्वाधिक कठोर तत्व है। मोह कठोरता पैमाने (Mohs scale) पर इसका मान अधिकतम 10 होता है।
Diamond, an allotrope of carbon, is the hardest naturally occurring element and material, defining the maximum value of 10 on the Mohs hardness scale.
Subject: General Science•Topic: Metals, Minerals, Ores: Properties and Uses•Subtopic: Metals, Minerals, Ores: Properties and Uses
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