MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Analytical Instrumentation knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
To monitor oxides of nitrogen in stack effluents, the sample containing oxides of nitrogen is passed through a flask containing solution of H2O2 in sulphuric acid. Nitric acid is formed. The nitrate ions then react with phenol-disulphonic acid to produce blue colour.a)True |
| A. | False |
| Answer» C. | |
| 2. |
A pink coloured dye complex is formed when air containing NO2 is passed in an absorbing solution consisting of __________ and diamine dissolved in the acetic acid medium. |
| A. | Sulphuric acid |
| B. | Sulphonyl |
| C. | Sulphonic acid |
| D. | Sulphanilic acid |
| Answer» E. | |
| 3. |
Which of the following analyzers are used to measure trace amounts of nitrogen oxides in the stratosphere? |
| A. | Chemiluminescence |
| B. | CO laser method |
| C. | Laser opto-acoustic spectroscopy |
| D. | Colorimetry |
| Answer» D. Colorimetry | |
| 4. |
Which of the following detectors are generally used for detection in NO analysis using CO laser? |
| A. | Photomultiplier tube |
| B. | Photovoltaic cell |
| C. | Liquid nitrogen cooled Ge-Au element |
| D. | Photo emissive tube |
| Answer» D. Photo emissive tube | |