Question

Match the LIST-I with LIST-II 

LIST-I		LIST-II
(Type of Fouling)		(Fouling Mechanism)
A	Precipitation	IV	Precipitation of dissolved substances...
B	Freezing	III	Solidification of Liquid components...
C	Particulate	I	Accumulation of fine particles suspended...
D	Corrosion	II	Heat transfer surface reacts with ambient...

• A. A - II, B - I, C - III, D - IV
• B. A - I, B - III, C - I, D - II
• C. A - IV, B - III, C - I, D - II
• D. A - III, B - IV, C - I, D - II

Hint:

The names of the fouling types are descriptive: \textbf{Precipitation} from dissolved solids, \textbf{Freezing} is solidification, \textbf{Particulate} from suspended particles, and \textbf{Corrosion} is a reaction of the surface itself.

Answer 1

The Correct Option is C

Step 1: Define each fouling type in LIST-I. Fouling is the accumulation of unwanted material on a surface, like a heat exchanger.
A. Precipitation fouling: Dissolved substances in the fluid precipitate onto the surface, often due to temperature changes. This corresponds to IV. Precipitation of dissolved substances...
B. Freezing fouling: A liquid component freezes and solidifies on a subcooled surface. This corresponds to III. Solidification of Liquid components...
C. Particulate fouling: Solid particles suspended in the fluid deposit on the surface. This corresponds to I. Accumulation of fine particles suspended...
D. Corrosion fouling: The surface material chemically reacts with the fluid, forming a corrosion product layer that acts as fouling. This corresponds to II. Heat transfer surface reacts with ambient...
Therefore, the correct matches are A-IV, B-III, C-I, and D-II.