Riddle

It can be clear like water, but it burns like fire.

Choose an answer

A.Gasoline
B.Vinegar
C.Water
D.Alcohol
Hint: It's a word with 7 letters, starting with "A".

Answer

Alcohol

Why this is the answer

Some alcohols, like vodka or rubbing alcohol, are clear like water but are highly flammable and burn readily.

This riddle is filed under Hard/Difficult Riddles and rated Medium.