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.

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: Option B

Explanation:

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