Inst ToolsInst ToolsInst Tools
  • Ask
  • Courses
  • Videos
  • Q & A
    • Interview
      • Instrumentation
      • Electronics
      • Electrical
      • Practical Questions
    • MCQ
      • Instrumentation MCQ
      • Electrical MCQ
      • Electronics MCQ
      • Control Systems MCQ
      • Analog Electronics MCQ
      • Digital Electronics MCQ
      • Power Electronics MCQ
      • Microprocessor MCQ
      • Multiple Choice Questions
  • EE
    • Electronics
      • Electronics Q & A
      • Electronic Basics
      • Electronic Devices & Circuits
      • Electronics Animation
      • Digital Electronics
    • Electrical
      • Electrical Basics
      • Electrical Q & A
      • Power Electronics
      • Electrical Machines
      • Electrical Animation
      • Power Systems
      • Switchgear & Protection
      • Transmission & Distribution
  • Measure
    • Control Valves
    • Calibration
    • Temperature
    • Pressure
    • Flow
    • Level
    • Analyzers
    • Switches
    • Vibration
    • Solenoid Valve
  • Control
    • PLC Tutorials
    • Control Systems
    • Safety Instrumented System (SIS)
    • Communication
    • Fire & Gas System
  • More
    • Design
    • Tools
    • Animation
    • Basics
    • Formulas
    • Standards
    • TextBooks
    • Common
    • Software
    • Excel Tools
    • Erection & Commissioning
    • Process Fundamentals
    • Videos
    • Books
Search
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Reading: IR Instrumentation Questions & Answers
Share
Notification Show More
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • PLC Tutorials
  • Control Systems
Search
  • Ask
  • Courses
  • Videos
  • Q & A
    • Interview
    • MCQ
  • EE
    • Electronics
    • Electrical
  • Measure
    • Control Valves
    • Calibration
    • Temperature
    • Pressure
    • Flow
    • Level
    • Analyzers
    • Switches
    • Vibration
    • Solenoid Valve
  • Control
    • PLC Tutorials
    • Control Systems
    • Safety Instrumented System (SIS)
    • Communication
    • Fire & Gas System
  • More
    • Design
    • Tools
    • Animation
    • Basics
    • Formulas
    • Standards
    • TextBooks
    • Common
    • Software
    • Excel Tools
    • Erection & Commissioning
    • Process Fundamentals
    • Videos
    • Books
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Multiple Choice Questions > IR Instrumentation Questions & Answers

IR Instrumentation Questions & Answers

Last updated: November 27, 2021 5:38 pm
Editorial Staff
Multiple Choice Questions
No Comments
Share
5 Min Read
SHARE

IR Instrumentation Questions & Answers

1. Which of the following is not a source used in Mid Infrared Spectrophotometer?

a) Nernst glower
b) High pressure mercury arc lamp
c) Globar
d) Nichrome wire

Answer: b

Explanation: High pressure mercury arc lamp is used as the source for Far IR Spectrophotometer. Rest of the options are used as source in Mid Infrared Spectrophotometer.

2. Which of the following is the wave number of near infrared spectrometer?

a) 4000 – 200 cm-1
b) 200 – 10 cm-1
c) 12500 – 4000 cm-1
d) 50 – 1000 cm-1

Answer: c

Explanation: The wave number of near infrared spectrometer ranges between 12500 – 4000. Wavenumber is the reciprocal of wavelength.

3. Which of the following options are correct in terms of wavelength for the different types of IR spectrometer?

a) Near IR: 0.8 – 2.5 mm
b) Mid IR: 0.8 – 2.5 mm
c) Far IR: 2.5 – 50 mm
d) Mid IR: 50 – 100 mm

Answer: a

Explanation: Wavelength of near IR is 0.8 – 2.5 mm and for mid IR it is 2.5 – 50 mm. The wavelength of far IR is 50 – 1000 mm.

4. Which of the following is not a composition of Nernst glower or Nernst filament?

a) Oxides of Zirconium
b) Oxides of Barium
c) Oxides of Yitrium
d) Oxides of Thorium

Answer: b

Explanation: Oxides of Barium is not present in Nernst glower. They are constructed by fusing oxides of Zirconium, yitrium and thorium.

5. What is the composition of Globar rod which is used as a source in Mid IR spectroscopy?

a) Silicon carbide
b) Silver chloride
c) Silicon dioxide
d) Silver carbide

Answer: a

Explanation: Globar is a silicon carbide rod. It is 5mm in diameter and 50mm long.

6. Bolometer, a type of detector, is also known as:

a) Resistance temperature detector (RTD)
b) Thermistor
c) Thermocouple
d) Golay cell

Answer: b

Explanation: Bolometers are also known as thermistors. It is a type of resistance thermometer constructed of metals such as platinum or nickel.

7. Which of the following is not a technique for preparing solid samples in IR spectroscopy?

a) Solids run in solution
b) Mull technique
c) Solid films
d) Thin films

Answer: d

Explanation: Four techniques are generally used to prepare solid samples. They are: Solids run in solution, Mull technique, Solid films and pressed pellet techniques.

8. Which of the following is not used as pyroelectric material used in pyroelectric transducers in Infrared spectroscopy?

a) Triglycine Sulphate
b) Deutrated Triglycine Sulphate
c) Some Polymers
d) Tetraglycine sulphate

Answer: d

Explanation: Pyroelectric materials are deutrated triglycine sulphate, triglycine sulphate and some polymers. They give rise to a potential when subjected to a heating or cooling effect.

9. Which of the following is the principle of Golay cell which is used as a detector in IR spectroscopy?

a) Expansion of gas upon heating
b) Increase in resistance due to increase in temperature and vice versa
c) Temperature difference gives rise to a potential difference in the material
d) Decrease in resistance due to increase in temperature

Answer: a

Explanation: It is also known as pneumatic detector. The gases expand on heating and this in turn leads to the movement of a diaphragm just like in pneumatic sensors.

10. In a solid sample treatment technique, the finely ground solid sample is mixed with mineral oil to make a thick paste which is then spread between IR transmitting windows. What is the name of this solid sample treatment technique?

a) Pressed pellet
b) Mull technique
c) Solid films
d) Solids run in solution

Answer: b

Explanation: The mentioned technique is Mull technique. This method is used for qualitative analysis but not quantitative analysis.

Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !
Time Response of First Order Systems Objective Questions
Online Analyzers Questions & Answers
Instrumentation of ESR Spectrometer
Basic ESR Spectrometer
Transfer Functions Objective Questions
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
208kSubscribersSubscribe
38kFollowersFollow

Categories

Recent Comments

  • Kamli on Top Free PLC Software
  • Guifty Shimica on Top Non-PLC Certification Courses for Automation Professionals
  • Guifty Shimica on Top Non-PLC Certification Courses for Automation Professionals
  • MIHARITSOA Aina Sitraka on Top Non-PLC Certification Courses for Automation Professionals

Related Articles

Process Pressure Measurement Objective Questions

Process Pressure Measurement Objective Questions

Instrument Calibration Multiple Choice Questions

Instrument Calibration Multiple Choice Questions

Feedback Characteristics of Control Systems

Feedback and Non-feedback Systems Objective Questions

Nuclear Magnetic Resonance Spectrometer Questions and Answers

Continuous Wave NMR Spectroscopy Questions & Answers

Feedforward Control Questions & Answers

Feedforward Control Questions and Answers

Time Response Analysis

Steady-state Errors & Error Constants

Digital Control Systems

Compensation Techniques : Control Systems

State Variable Analysis and Design

Controllability & Observability

More Articles

Electrical Machines Objective Questions

Electrical Machines Objective Questions

Factors for Setting Alarm Levels on Toxic Gas Detectors

Factors for Setting Alarm Levels on Toxic Gas Detectors

Safety Integrity Level (SIL)

old Pressure Switches

Pressure Switch Frozen Screwed Cover Extends the Plant Shutdown

Measuring Circuit Voltage

Voltmeters

Series Air Fuel Combustion Control

Combustion Control – Series and Parallel Air-Fuel Ratio Control

Strain Gauge Pressure Sensor Principle

Strain Gauge Pressure Sensor Principle

how-to-find-resistor-value

Limitations of Resistors

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?