Question

Match List-I with List-II.

List-I	List-II
A. Shell and tube heat exchanger	I. Plate surface transfer of heat
B. Plate heat exchanger	II. Fluid flows inside tubes in shell
C. Scraped surface heat exchanger	III. Product scraped from wall for viscous heat transfer
D. Spiral heat exchanger	IV. Product flows in spiral channel

Choose the correct answer from the options given below:

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

Hint:

Scraped surface → viscous foods, Plate → thin layers.

Answer 1

The Correct Option is A

Concept: Heat exchangers differ in design depending on flow arrangement and product characteristics.

Step 1: Shell and tube heat exchanger (A).

• Fluid flows inside tubes enclosed by a shell So, A $\rightarrow$ II.

Step 2: Plate heat exchanger (B).

• Heat transfer occurs across plates So, B $\rightarrow$ I.

Step 3: Scraped surface heat exchanger (C).

• Used for viscous products
• Scraper removes material from surface to enhance heat transfer So, C $\rightarrow$ III.

Step 4: Spiral heat exchanger (D).

• Fluids move in spiral channels So, D $\rightarrow$ IV.

Step 5: Final matching. \[ A-II,\; B-I,\; C-III,\; D-IV \] Final Conclusion:
Option (1) is correct.