Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about ______________ percent?

Lessing ring is formed by the addition of a partition across the centr

1.	Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about ______________ percent?
A.	5
B.	20
C.	35
D.	55
Answer» C. 35