_Which of the following is the most important rubber compounding ingra – McqOptions

MCQOPTIONS

1.	_Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness?$?
A.	Phosphorous
B.	Carbon black
C.	Pine oil
D.	Rosin
Answer» C. Pine oil

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