Question

Pick out the wrong statement.

a.

With decrease in feed temperature, the number of plates required for binary distillation decreases for a given L/V ratio.

b.

The extraction per unit of total height for a short packed column is more effective than for a tall column, in case of liquid-liquid extraction.

c.

Natural draft cooling towers are made of ferro-concrete and its cross-section is wider at the bottom.

d.

Vanderwall adsorption is also called chemisorption.

Answer: (d).Vanderwall adsorption is also called chemisorption.

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Q. Pick out the wrong statement.

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