Directions: Carefully read the statements and choice the letter of the correct answer.
Write your answer on a separate sheet of paper.
1. What is noise?
A. an unwanted noise B. an irritant
C. a source of stress D. all of the above
2. Which contributes maximum noise?
A. transparent sector B. special events
C. industrial and constructions machinery D. none of the above
3. What measures sound?
A. Hertz B. Decibel
C. ppm D. none of the above
4. What scale is used for loudness of sound or music?
A. Linear scale B. logarithmic scale
C. exponential scale D. none of the above
5. Which can cause noise pollution?
A. Hypertension B. hearing loss
C. sleep disturbance D. all of the above
6. Which level of sound during conversation?
A. 20 dbA B. 40 dbA
C. 60 dbA D. 80 dbA
7. Which can reduced roadways noise?
A. Use of noise barriers B. Alternation of roadways surface texture
C. Limitation of vehicles speed D. All of the above
8. How to measure intensity of sound?
A. Sound level matter B. Frequency meter
C. both a and b D. none of the above
9. What level of noise is allowed by WHO is residential areas?
A. 25 dB B. 50 dB C. 75 dB D. 100 dB
10. research suggest that noise pollution is the highest in ________ income neighborhoods.
A. low B. medium C. higher D. all of the above