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    Viewing thread What is a sound board? Explain the working of a soundboard with the help of a labelled diagram. Oct 16, 2019 at 8:39 AM

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    Viewing thread Loaded test-tube placed in pure milk sinks to a certain mark (M) Oct 16, 2019 at 8:34 AM

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    Viewing thread What are wavelength, frequency, time period and amplitude of a sound wave? Oct 16, 2019 at 8:29 AM

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    Viewing thread Describe how crystals of copper sulphate are prepared. Oct 16, 2019 at 8:28 AM

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    Viewing thread Qn#4 A survey by the National Council of Churches showed that in 1986 there were Oct 16, 2019 at 8:28 AM