Noise Pollution MCQs – CHAPTER 4 DAE

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1. . Unit of measurement of noise is





2. . Physical effect of noise are





3. . The generally accepted standard range of available frequency is





4. . Term often used to refer an unwanted sound to disturb the peoples





5. . It is logarithmic measure of the effective sound pressure of a sound relative to a reference value





6. . The combined effect and scattering absorption of sound is called





7. . Reduction of sound energy transmitted into an adjoining air space





8. . Reducing the sound pressure with respect to a specific sound source and receptor





9. . It is to reduce resonance or redirection (reflection or diffusion)





10. . In one method of isolating sound and stopping it from transmitting to the outside world where it may be undesirable





11. . Fact is to decrease or eliminate the exterior noise





12. . Process of reflection and absorption of sound wave in an enclosure





13. . Is used to measure the noise





14. . Used as a noise control personal protective instrument





15. . Industrial noise may cause to an employee





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