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The densities of wood and benzene at 0^(...

The densities of wood and benzene at `0^(@)C` are `880 kg//m^(3)` and `900 kg//m^(3)` respectively. The coefficients of volume expansion are `1.2 xx 10^(-3)//'^(@)C` for wood and `1.5 xx 10^(-3)//'^(@)C` for benzene. At what temperature will a piece of wood just sink in benzene?

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The correct Answer is:
`83^@C`
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