The first step in the refining process, fractional distillation, is the process by which heat is ...

The first step in the refining process, fractional distillation, is the process by which heat is used to separate liquids based on their different freezing temperatures.
 
  Indicate whether the statement is true or false.

Question 2

The hydrocarbons present in petroleum are mostly single-bonded carbon molecules called methanes
 
  Indicate whether the statement is true or false.

Question 3

Crude oil was formed during the Mesozoic Era when dinosaurs roamed the Earth.
 
  Indicate whether the statement is true or false.

Question 4

The cleanest burning and densest type of coal is _______________.
 
  Fill in the blank(s) with the appropriate word(s).

Question 5

The development of deep coal mines required a way to remove groundwater that sometimes flooded the
  mines. This led to the invention of the _______________.

 
  Fill in the blank(s) with the appropriate word(s).