Crude Oil

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H Y D R O C A R B O N S O U X F R R C A H
N R K U X I T W X S D V B Q P S A J B Q V
O P K E R E G F Y T X O O S H M K A Q L U
F B C J C H D Q F S X J I R F G T A I Q R
L Y P E T R O L E U M G A S A E Q N I O U
L B S R K Q T X Y X O B B P H C P N L I Q
N W S N F L A M M A B I L I T Y Q H R K Q
T H E R M A L D E C O M P O S I T I O N L
F F R A C T I O N I N G C O L U M N V P O
H L Q W E E Q H W W D Q M P X A U T U U H
V O L A T I L I T Y V P D A N N M W H Y H
N V U P Y H E J E G V F C Y Q A E A J M V
R L M G B O I L I N G P O I N T I Y M I L
J D I E S E L O I L F F W N C F L C H O Y
L H Q M W M C C Y U F O M Q C B J T Q S O
F A U O I O N M Y E J N D Q W T A L C U P
C A R B O N M O N O X I D E X O C L Q F T
O H T B A N H D W A L Y J I G I E U E J Q
N J J F G A S O L I N E P E T R O L F N V
F H G H D W C W N D P Y G E K K Y Q W N F
Q A Q N H A L U M J U M G S E F T H A T M

Clues

  • Compounds only containing hydrogen and carbon (12)
  • How easily it burns (12)
  • Poisonous gas (6, 8)
  • Short-chain hydrocarbons and low boiling point alkanes, used as a fuel (9, 3)
  • Tall tower where fractioning happens (11, 6)
  • The hydrocarbons are cracked when this takes place (7, 13)
  • The size of the molecule depends on its... (7, 5)
  • The tendency to turn into a gas (10)
  • Used as fuel in diesel engines and as boiler fuel (6, 3)
  • Used for fuel in car engines (8, 6)

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