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प्रश्न
The material generally used for sound proofing of rooms like a recording studio and auditorium is ______.
विकल्प
cotton
coir
wood
styrofoam
MCQ
रिक्त स्थान भरें
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उत्तर
The material generally used for sound proofing of rooms like a recording studio and auditorium is styrofoam.
shaalaa.com
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