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Engineering Exams RRB-JE CS (Chemical Supervisor - Research) Technical Abilities 2025 22.04.25 Paper-2 Shift-1 Medium +1 -0.33
Which property makes melamine foam suitable for soundproofing applications?
Correct Answer: B. High porosity
Explanation: Melamine foam is highly effective for soundproofing due to its open-cell structure, which allows sound waves to enter the material rather than reflecting off the surface. Once inside, these waves are trapped within the intricate network of air pockets and slender filaments, where their energy is converted into low-level heat through friction and dissipated. This porous composition significantly reduces noise, echoes, and reverberation, making it a superior choice for acoustic insulation in environments like recording studios and offices.
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