This set of Instrumentation Transducers Multiple Choice Questions & Answers (MCQs) focuses on “Chemical Sensors”.
1. Which of the following change electrical conductivity on the absorption of a gas molecule?
a) Tin
b) Zinc
c) Nickel
d) All of the mentioned
View Answer
Explanation: Tin, Zinc and Nickel shows change in electrical conductivity on absorption of gas molecule on semiconductor surface.
2. Polypropylene is a/an _____________
a) Inorganic sensor
b) Organic sensor
c) Metal sensor
d) Gaseous sensor
View Answer
Explanation: Polypropylene is a type of organic sensor.
3. ISE stands for __________________
a) Ion sticking electrode
b) Ion selective electrode
c) Inactive segment electrode
d) Inorganic substance electrode
View Answer
Explanation: ISE is the short form of Ion selective electrode.
4. Glass electrode is an ion selective electrode.
a) True
b) False
View Answer
Explanation: Glass electrode is used to measure pH which is the hydrogen ion activity.
5. Water purity is tested by ____________
a) Water activity sensor
b) pH meter
c) SAW sensor
d) BAW sensor
View Answer
Explanation: Purity of water is tested using pH meters.
6. Heater power in thick film hybrid technology is __________
a) 5KW
b) 50 MW
c) 500 MW
d) 500 mW
View Answer
Explanation: Heater power in thick film hybrid technology is up to 500 mW.
7. Chemiresistor sensors are used for test gases in _______________
a) Solid form
b) Liquid form
c) Vapour form
d) All of the mentioned
View Answer
Explanation: If the test gas is in vapour form, chem resistor sensors are used.
8. IR sensors are used in detection of _______________
a) Organic gases
b) Inorganic gases
c) Vapours
d) All of the mentioned
View Answer
Explanation: IR sensors can be used in detecting many organic inorganic gases and vapours.
9. Photo ionization and flame ionization technique are most favoured in detection of ____________
a) Organic gases
b) Inorganic gases
c) Vapours
d) All of the mentioned
View Answer
Explanation: Organic gases can be most effectively detected using photo ionization and flame ionization technique.
10. Mass sensors are a combination of SAW.
a) True
b) False
View Answer
Explanation: Mass sensors are generally a combination of sensors coming under SAW.
Sanfoundry Global Education & Learning Series – Instrumentation Transducers.
To practice all areas of Instrumentation Transducers, here is complete set of 1000+ Multiple Choice Questions and Answers.
- Check Instrumentation Engineering Books
- Apply for Instrumentation Engineering Internship
- Practice Instrumentation Engineering MCQs
- Check Instrumentation Transducers Books
