Match List-I with List-II
Choose the correct answer from the options given below:
Show Hint
Remember: Synthetic materials (Sponge plastic, Thermocol) generally provide higher buoyancy (lower numerical value in this specific unit of g/1000cc) compared to natural materials like wood and cork.
Step 1: Understanding the Concept:
Buoyancy in fishing gear floats is a measure of the upward force a float provides. It is determined by the density of the material. In fisheries science, buoyancy is often expressed as the weight (in grams) of water displaced by a certain volume (1000cc) of the material minus its own weight. Practically, the "lighter" the material (lower density), the higher its buoyancy value in this context. Detailed Explanation:
Different materials used for floats have specific buoyancy values based on their porosity and chemical composition:
1. Sponge Plastic (A): Modern synthetic floats made of expanded PVC or other sponge plastics are extremely light and provide excellent buoyancy. They typically offer about 650g/1000cc of buoyancy. (A-I)
2. Thermocol (B): Expanded polystyrene (Thermocol) is also very light but slightly denser than specialized high-grade sponge plastic when used in float form. It typically matches with 825g/1000cc. (B-II)
3. Cork (C): Natural cork was the traditional material for floats. Its buoyancy varies depending on the quality and treatment but generally falls in the range of 800--860g/1000cc. (C-IV)
4. Wood (D): Wooden floats (often treated or made of light woods like balsa or cedar) are the heaviest among the listed materials. Consequently, they provide the lowest buoyancy, approximately 900g/1000cc. (D-III)
The matching sequence is: A-I, B-II, C-IV, D-III. Step 2: Final Answer:
The correct match is provided in Option (C).
