Process Equipment and Plant Design
Any shell opening greater than 5 cms for a storage tank must be reinforced for reason of

Preventing the local overstressing of the shell around the opening
Making the joint leak proof
None of these
Reduction of discontinuity in shape at the junction

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Process Equipment and Plant Design
Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the

Liquid/vapor loading across the column remains constant
Trouton's rule is applicable
All of these
Sensible heat differences are small, because the temperature changes from tray to tray is small

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