Q. Which of the following are not the characteristics of colorimetry method used to monitor sulphur dioxide?

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Q. Which of the following is not true about using gas chromatography for measuring pollutants in the air?

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Q. The ability of sulphur dioxide to reduce iodine is used in which of the following methods?

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Q. Which of the following materials are used as electrodes in the coulometric method for the measurement of sulphur dioxide?

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Q. Which of the following is the detection limit of the coulometric method used for measurement of sulphur dioxide?

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Q. Sensitivity to total sulphur by Flame-photometric detector is which of the following levels?

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Q. Which of the following methods are not used for the measurement of sulphur dioxide?

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Q. Which of the following is the wavelength of the radiation generated when an air stream containing sulphur dioxide is burned in a hydrogen-rich flame?

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Q. In conductivitimetric method, the concentration of sulphur dioxide is proportional to which of the following parameters of the saw-tooth waveform?

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Q. In the conductivitimetric method, to measure the conductivity of the cell, 5V ___________ is applied across the electrodes.

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Q. The response of coulometric method is instantaneous.

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Q. In Saltzman method, which of the following are formed when air containing NO₂ is passed in an absorbing solution consisting of the sulphanilic acid and diamine dissolved in the acetic acid medium?

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Q. NO can be analysed by converting it into NO₂ and passing it through potassium permanganate. Which of the following is the main disadvantage of this method?

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Q. In Jacob-Hochheiser method, NO₂ is passed through a dilute solution of sodium hydroxide forming the nitrite ion. The nitrite ion is reacted with sulphanilamide and ethylene diamine in which of the following to form the highly coloured azo dye?

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Q. Which of the following methods results in the formation of yellow coloured compound?

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Q. Which of the following is the most common application of Chemiluminescence method used for the analysis of Nitrogen oxides?

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Q. Which of the following is the wavelength at which CO laser operates?

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Q. CO laser is operated at liquid nitrogen temperature.

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Q. The chemiluminescence reactor with ozonator is specific to which of the following compounds?

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Q. In which of the following ways can chemiluminescence occur in compounds of nitrogen?

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