Graphite is used as a lubricant because it is
Graphite is used as a lubricant because it is
The correct option is C soft and slippery
The explanation for the correct option:
Option C: Graphite has a layered structure of hexagonal rings. It has one atom covalently bonded to three other carbon atoms, forming a giant hexagonal molecular structure with layers held by weak Vander Waals' forces. As the Van der Waals' forces between the layers are weak, the layers can easily slide over each other when pressured and is soft. Thus, it can be used as a lubricant.
The explanation for the incorrect option:
Option A: Graphite is used as a lubricant because the van der Waals' forces between the layers are weak, the layers can easily slide over each other when pressured, and is soft. Thus, it can be used as a lubricant. It is not because of the conduction of heat.
Option B: Graphite is used as a lubricant because the van der Waals' forces between the layers are weak, the layers can easily slide over each other when pressured, and is soft. Thus, it can be used as a lubricant. It is not because of the conduction of electricity.
Option D: Graphite is used as a lubricant because the van der Waals' forces between the layers are weak, the layers can easily slide over each other when pressured, and is soft. Thus, it can be used as a lubricant. It is not because of its dissolving nature.
soft and slippery
The explanation for the correct option:
Option C: Graphite has a layered structure of hexagonal rings. It has one atom covalently bonded to three other carbon atoms, forming a giant hexagonal molecular structure with layers held by weak Vander Waals' forces. As the Van der Waals' forces between the layers are weak, the layers can easily slide over each other when pressured and is soft. Thus, it can be used as a lubricant.
The explanation for the incorrect option:
Option A: Graphite is used as a lubricant because the van der Waals' forces between the layers are weak, the layers can easily slide over each other when pressured, and is soft. Thus, it can be used as a lubricant. It is not because of the conduction of heat.
Option B: Graphite is used as a lubricant because the van der Waals' forces between the layers are weak, the layers can easily slide over each other when pressured, and is soft. Thus, it can be used as a lubricant. It is not because of the conduction of electricity.
Option D: Graphite is used as a lubricant because the van der Waals' forces between the layers are weak, the layers can easily slide over each other when pressured, and is soft. Thus, it can be used as a lubricant. It is not because of its dissolving nature.
