Question

Match List I with List II 

Choose the correct answer from the options given below:} 
 

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

Hint:

To solve matching questions quickly, find the most certain pair first:
- Liquid nitrogen is synonymous with ultra-fast cryogenic freezing (A - III).
- Ethylene is the standard ripening hormone for fruits (B - IV).
This narrows the choices down immediately.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Agricultural processing and preservation technologies involve the application of physical agents, chemical treatments, and specialized drying systems to maintain the quality of diverse food commodities.
Each material or process has a specific application depending on the product being treated, such as dairy products, fruits, grains, or frozen foods.

Step 2: Detailed Explanation:
Let us analyze each pair individually to establish the correct match:
- A. Liquid nitrogen: Liquid nitrogen is a cryogenic liquid with an extremely low boiling point of approximately \( -196^\circ\text{C} \).
It is widely utilized in the food industry for rapid cryogenic freezing of high-value commodities to preserve their texture, cell structure, and nutrients.
Therefore, A matches with III. Freezing.
- B. Ethylene: Ethylene is a natural plant hormone in gaseous form.
It plays a critical regulatory role in the biochemical pathways of ripening, color development, and senescence in climacteric fruits.
Therefore, B matches with IV. Fruits.
- C. Phosphine: Phosphine (\( \text{PH}_3 \)) is a highly effective, widely used gaseous chemical fumigant.
It is applied in sealed storage structures to protect stored agricultural grains from insect pests and rodent infestations.
Therefore, C matches with II. Grains.
- D. Spray dryer: A spray dryer is a thermal processing system that atomizes a liquid feed into a hot drying gas to rapidly produce a fine powder.
This is the standard industrial method used to convert liquid milk into milk powder.
Therefore, D matches with I. Milk.
Combining these individual matches yields the sequence: A - III, B - IV, C - II, D - I.

Step 3: Final Answer:
The correct matching sequence is A - III, B - IV, C - II, D - I.