Which allotrope of carbon is soft, greasy and is used as solid lubricant for heavy machinery operating at a high temperature?

3

Mention two uses of ethanoic acid.

4

Why soap solution appears cloudy?

2

Which property of diamond allows it to be used in knives for cutting marble?

3

Which of the following are alkenes?

CH₄, C₂H₆, C₂H₄, C₃H₆ and C₃H₈