Verbal - Odd Man Out

DIRECTIONS : In this oddman out section we need choose the word or pair that different from remaining words or pairs.
121. Pick the odd one out
  A.  Coal
  B.  Biogas
  C.  Petroleum
  D.  Natural gas
122. Pick the odd one out
  A. Glue
  B. Paste
  C. Oil
  D. Cement

123. Pick the odd one out
  A.  Medium
  B.  Average
  C.  Terrible
  D.  Mediocre
124. Pick the odd one out
  A.  Parrot
  B.  Owl
  C.  Eagle
  D.  Hawk
125. Pick the odd one out
  A.  House
  B.  Wall
  C.  Roof
  D.  Beam