(A) knocking ()
(B) reforming (X)
(C) cracking (X)
(D) a and c (X)
Answers: The metallic sound produced by engine due to the pre-ignition of fuel is called knocking.
(A) knocking ()
(B) reforming (X)
(C) cracking (X)
(D) a and c (X)
Answers: The metallic sound produced by engine due to the pre-ignition of fuel is called knocking.
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