Noise Pollution MCQ – Environmental Engineering

51. The intensity of sound wave combined with reception characteristics of ear is known as

  1. Frequency
  2. Wavelength
  3. Loudness
  4. Amplitude
Answer
Answer. c

52. Tinnitus is due to

  1. Air pollution
  2. Light pollution
  3. Water pollution
  4. Sound pollution
Answer
Answer. d

53. The energy transmitted by a sound wave in the direction of its propagation is called

  1. Power of sound
  2. Intensity of sound
  3. Frequency of sound
  4. Period of sound
Answer
Answer. a

54. What will be the resultant decibel level when there are 4 sources making noise of equal levels?

  1. Decibel level will increase by 4 decibels.
  2. Decibel levels will remain the same
  3. Decibel level will increase by 8 decibels
  4. Decibel level will increase by 6 decibels
Answer
Answer. d

55. Under residential use zone, identify the accessory use which is NOT permissible.

  1. Local shopping
  2. Godown
  3. Nursery School
  4. Hostels
Answer
Answer. b

56. Name the instrument used for acoustics measurement.

  1. Sound Level Meter
  2. Flame Photometer
  3. Ultrasonic Meter
  4. Planimeter
Answer
Answer. a

57. The frequency of sound is measured by the unit

  1. Decibel
  2. Hertz
  3. Dobson
  4. Pascal
Answer
Answer. b

58. What is the ambient air quality standards with respect to noise in industrial area during day time?

  1. 75 dB
  2. 70 dB
  3. 50 dB
  4. 55 dB
Answer
Answer. a

59. An acceptable noise level for residential and business areas as per IS: 4594: 1968 is

  1. 25-35 dB
  2. 40-50 dB
  3. 50-60 dB
  4. 70-80 dB
Answer
Answer. b

60. 10 decibel (dB) increase in sound level will increase the loudness of sound by

  1. 5 times
  2. 2 times
  3. 10 times
  4. none of the above
Answer
Answer. c