904. Density in the solid state is slightly less than that in its liquid state, in case of
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905. Which of the following is not an ore of iron?
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906. Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that
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907. Grain hardness is measured by the __________ hardness testing method.
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908. Dezincification is a form of corrosion, which specifically applies to
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909. The magnitude of water hammer caused in pipe flow is independent of the
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910. Hydrogen can be
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