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The material generally used for sound pr...

The material generally used for sound proffing of rooms like a recording studio and auditorium, etc. is

A

cotton

B

coir

C

wood

D

styro foam

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The correct Answer is:
D
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GRB PUBLICATION-ENVIRONMENTAL ISSUES-Assertion & Reason Type Questions
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  13. (A) : The successful establishment of a species in a bare area is call...

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  18. (A) : The success of mammals is largely due to their ability to mainta...

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