Which one among the following is a solid lubricant?A: IndiumB: GermaniumC: SulphurD: Graphite
Question
Which one among the following is a solid lubricant?A: IndiumB: GermaniumC: SulphurD: Graphite
Solution
The answer is D: Graphite. Graphite is a form of carbon where the carbon atoms are arranged in multiple layers. These layers can slide over each other easily, making graphite a good lubricant. It is often used in situations where liquid lubricants, such as oil, cannot be used. This property, along with its high melting point, makes graphite a solid lubricant.
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