MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the disadvantage of using conductometric analysers? |
| A. | Low sensitivity |
| B. | Interfering gases must be removed before monitoring process |
| C. | Medium used to measure change in conductivity is expensive |
| D. | All of the mentioned |
| Answer» C. Medium used to measure change in conductivity is expensive | |
| 2. |
In-situ in-stack analysers are used for measuring concentrations of which of the following gases? |
| A. | Ammonia |
| B. | Sulphur dioxide |
| C. | Nitrogen monoxide |
| D. | All of the mentioned |
| Answer» E. | |
| 3. |
In-situ cross stack analysers work behind which of the following principles? |
| A. | Differential absorption spectroscopy |
| B. | Gas-filter correlation spectroscopy |
| C. | Differential absorption & Gas-filter correlation spectroscopy |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 4. |
Which of the following analyser is used for oxygen analysis? |
| A. | Electrocatalytic |
| B. | Polarographic |
| C. | Conductive |
| D. | Amperometric |
| Answer» B. Polarographic | |
| 5. |
Non-Dispersive Ultraviolet (NDUV) analysers are primarily used to detect which of the following two gases? |
| A. | Oxygen and Carbon Dioxide |
| B. | Oxygen and Nitrogen Dioxide |
| C. | Nitrogen Dioxide and Sulphur Dioxide |
| D. | Sulphur Dioxide and Oxygen |
| Answer» D. Sulphur Dioxide and Oxygen | |
| 6. |
WHICH_OF_THE_FOLLOWING_ANALYSER_IS_USED_FOR_OXYGEN_ANALYSIS??$ |
| A. | Electrocatalytic |
| B. | Polarographic |
| C. | Conductive |
| D. | Amperometric |
| Answer» B. Polarographic | |
| 7. |
In-situ in-stack analysers are used for measuring concentrations of which of the following gases?$ |
| A. | Ammonia |
| B. | Sulphur dioxide |
| C. | Nitrogen monoxide |
| D. | All of the mentioned |
| Answer» E. | |
| 8. |
In-situ_cross_stack_analysers_work_behind_which_of_the_following_principles?$ |
| A. | Differential absorption spectroscopy |
| B. | Gas-filter correlation spectroscopy |
| C. | Differential absorption & Gas-filter correlation spectroscopy |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
Airshed modelling takes into account the effects of only stationary sources and not the mobile sources of pollution. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Flame photometric analysers are specific to sulphur compounds. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
What_is_the_disadvantage_of_using_conductometric_analysers? |
| A. | Low sensitivity |
| B. | Interfering gases must be removed before monitoring process |
| C. | Medium used to measure change in conductivity is expensive |
| D. | All of the mentioned |
| Answer» C. Medium used to measure change in conductivity is expensive | |
| 12. |
Electroanalytical monitors rely on which of the following methods? |
| A. | Polarography and amperometric analysis |
| B. | Polarography and electrocatalysis |
| C. | Polarography, electrocatalysis and conductivity |
| D. | All of the mentioned |
| Answer» E. | |
| 13. |
Fluorescence analysers are used to analyse which of the following gases? |
| A. | Nitrogen dioxide |
| B. | Sulphur dioxide |
| C. | Sulphur trioxide |
| D. | Nitrous oxide |
| Answer» C. Sulphur trioxide | |
| 14. |
NDUV analysis is also known as the differential absorption. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
NDUV monitors use a reference gas to analyse other gases. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
Non-Dispersive Ultraviolet (NDUV) analysers are primarily used to detect which of the following two gases? |
| A. | Oxygen and Carbon Dioxide |
| B. | Oxygen and Nitrogen Dioxide |
| C. | Nitrogen Dioxide and Sulphur Dioxide |
| D. | Sulphur Dioxide and Oxygen |
| Answer» D. Sulphur Dioxide and Oxygen | |
| 17. |
What does the abbreviation NDIR stand for, in the category of spectrometric analysers? |
| A. | Non-Destructive Integrated Restoration |
| B. | Neo-Destructive Integrated Radiation |
| C. | Non-Dispersive Infrared |
| D. | Neo-Dispersive Integrated Radiation |
| Answer» D. Neo-Dispersive Integrated Radiation | |
| 18. |
Are any of the following monitors used to measure the concentration of particular gases from the exhaust generated in vehicles? |
| A. | Opacity monitors |
| B. | Gaseous emission monitors |
| C. | Opacity & Gaseous emission monitors |
| D. | None of the mentioned |
| Answer» C. Opacity & Gaseous emission monitors | |
| 19. |
What is the principle behind which opacity monitors/transmissometers work? |
| A. | Change in capacitance for various gaseous media, between two stationary plates |
| B. | Pressure exerted by a fixed volume of gas enclosed in a container of specific dimension |
| C. | Scattering of light transmitted through a gas stream |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |