Noise Pollution MCQ – Environmental Engineering

61. The level at which the ear registers pain

1. 30 decibels
2. 120 decibels
3. 50 decibels
4. 70 decibels

62. In a residential house along a highway an effective strategy to control noise level is to

1. Construct boundary wall around the house
2. Placing metal sheets all around the house
3. Planting thick bushes all around the house
4. Planting trees around the house

63. Consider the following statements:

1. Noise pollution is additive on a logarithmic scale
2. Noise propagates differently in different media

Which of the above statements is/are correct?

1. ii only
2. i only
3. Neither i nor ii
4. Both i and ii

64. Increase in pressure cause the sound to

1. remain unchanged
2. remain unchanged up to a certain range
3. become weaker
4. become louder

65. The noise pollution which produces pain in the heart and narrowing of arteries comes under the following effect?

1. Physiological effect
2. Psychological effect
3. Physical effect
4. Mental stress effect

66. The mixer-grinders, desert coolers exhaust fans, sewing and washing machines are all sources of noise pollution. This pollution is termed as

1. Transport pollution
2. Industrial pollution
3. Pollution from public address system
4. Pollution from Household