Chemistryeasy · Past Paper
Which form of carbon is used as a lubricant in heavy machinery?
ADiamond
BCoke
CGraphite
DCharcoal
✓ Correct Answer: C — Graphite
Graphite has a layered structure with weak van der Waals forces, allowing layers to slide over each other.
Share this question
More from Chemistry
- What happens when calcium carbonate is heated to about 900 °C?
- Which element has the highest electron affinity in the periodic table?
- Which of the following is used as a moderator in nuclear reactors?
- Which gas is evolved when Sodium Bicarbonate reacts with Hydrochloric acid?
- Which indicator is often used to titration strong acids against strong bases?