Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are

Temperature and gage pressure maintained during the manufacture of hot

1.	Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are
A.	50°C and 3 - 4 kg/cm²
B.	50°C and 1 kgf/cm²
C.	250°C and 10 kgf/cm²
D.	250°C and 1 kgf/cm²
Answer» B. 50°C and 1 kgf/cm²