Answers

2015-09-23T18:39:31+05:30
Sound is not unpleasant to ear and does not cause noise pollution whereas  nopise is unpleasant and causes noise pollution

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2015-09-23T18:47:01+05:30
SOUND IS A SENSATION CAUSED IN THE EAR BY THE VIBRATION OF THE SURROUNDING AIR OTHER MEDIUM
NOISE ON THE OTHER HAND IS AN UNPLEASANT SOUND EXPECIALLY A LOUD ONE COMPRISING OF SHORTS TOO
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