Diamond used in jewellery is

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Q: 112 (CDS-I/2002)
Diamond used in jewellery is

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,23,30,15,4,11,23

keywords: 

{'diamond': [0, 0, 3, 3], 'jewellery': [0, 0, 0, 1], 'compounds': [0, 0, 0, 3], 'compound': [0, 0, 1, 1], 'metal': [3, 0, 4, 6], 'element': [0, 0, 0, 1], 'mixture': [0, 0, 1, 5]}

The correct answer is option 4: An element.

Diamond is a precious gemstone that is widely used in jewelry. It is the hardest known natural material and is composed of a single element, carbon. Each carbon atom in a diamond is bonded to four other carbon atoms in a tetrahedral crystal lattice structure. The strong covalent bonds between the carbon atoms give diamond its exceptional hardness and strength.

Option 1: A compound - A compound is a substance made up of two or more different elements. Since diamond is composed of only carbon, it is not a compound.

Option 2: A metal - Metals are usually characterized by their high electrical conductivity and metallic luster. Diamond does not possess these properties, so it is not a metal.

Option 3: A mixture of compounds - A mixture is made up of two or more substances that are physically combined. Since diamond is composed of a single element, it cannot be considered a mixture of compounds.

Therefore, the correct answer is option 4: An element.

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