Approximately for how many years will coal last if we maintain the current rate of consumption?
The population of a city continuously grows at a rate of 8% yearly. About how many years will it take for the population to triple?
Crude petroleum oil is a complex mixture of organic liquids that occurs naturally beneath Earth’s surface. It was formed millions of years ago. Crude oil is vaporized and made to undergo fractional distillation where its components get separated as shown in the figure.
The organic liquids present in crude oil are separated in a fractional distillation chamber because they have different