At this juncture the voice of Central, jaded and acidulated, broke in curtly: "Are you through." [Please select]
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It consists essentially in the use of an acidulated bath of sodium nitrite. [Please select]
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Alkali blue 6 B, After dyeing rinse, then acidulate as above and wash well. [Please select]
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A is a battery; B a vessel containing, say, an acidulated solution of sulphate of copper. [Please select]
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--By means of an electrolytic action, whereby the current decomposes an acidulated solution--that is, water which has in it a small amount of sulphuric acid--and then measuring the gas generated by the current. [Please select]
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A battery which is better known by the name of the Voltaic Pile, made up of zinc and copper plates which alternate, and with a layer of acidulated paper between each pair of plates. [Please select]
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