Sulfuric acid is a（）.

A、clear syrupy liquid with no odor

B、colorless-to-brown liquid with a choking odor when hot

C、colorless liquid with a pleasant fruity odor

D、whitish liquid with a faint，pleasant odor

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更多“Sulfuric acid is a（）.”相关的问题

第1题

[单选题] The electrolyte in a lead-acid storage battery consists of distilled water and （）.

A、hydrogen chloride B、calcium chloride C、sulfuric acid D、muriatic acid

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第2题

[] The electrolyte in a lead-acid storage battery consists of distilled water and （）.

A、A.hydrogen chloride B、B.calcium chloride C、C.sulfuric acid D、D.muriatic acid

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第3题

[单选题] Which of the following conditions is most likely to occur when unburned fuel contaminates the crankcase of a diesel engine?（）

A、Lube oil is diluted and its viscosity is reduced B、Sulfuric acid is formed C、Bearings become pitted ad immediately fail D、Valve stems develop sludge deposits

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第4题

[单选题] Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water?（）

A、Hydrochloric acid B、Chlorine C、Sulfuric acid D、Zinc chromate

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第5题

[单选题] According to the Chemical Data Guide，when burning，the grade B flammable liquid，carbon disulfide produces（）.

A、phosgene gas B、sulfuric acid gas C、sulfur dioxide gas D、carbon tetrachloride

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第6题

[单选题] When fuel enters the crankcase of a diesel engine, it （）

A、dilutes the lube oil and reduces its viscosity B、forms sulfuric acid in the lube oil C、causes pitting and failure of the bearings D、causes sludge deposits on valve stems

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第7题

[] In a diesel engine exhaust system, the cooling of the exhaust gases below their dew point, will result in （）

A、A.increased engine back pressure B、B.sulfuric acid corrosion C、C.surface pitting of the turbocharger D、D.moisture impingement on the turbocharger compressor blade