Industrial Gas Analysers MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Industrial Gas Analysers, a fundamental topic in the field of Analytical Instrumentation. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Industrial Gas Analysers MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Industrial Gas Analysers mcq questions that explore various aspects of Industrial Gas Analysers problems. Each MCQ is crafted to challenge your understanding of Industrial Gas Analysers principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Analytical Instrumentation tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Industrial Gas Analysers MCQs are your pathway to success in mastering this essential Analytical Instrumentation topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Industrial Gas Analysers. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

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Industrial Gas Analysers MCQs | Page 5 of 10

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Q41.
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

Discuss
Answer: (c).Liquid nitrogen cooled Ge-Au element
Q42.
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

Discuss
Answer: (c).Laser opto-acoustic spectroscopy
Q43.
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

Discuss
Answer: (d).Sulphanilic acid
Q44.
In Laser Opto-acoustic spectroscopy, the IR beam excites the molecules to higher states. In which of the following ways do the molecules return to the ground state?

a.

Collisional de-excitation

b.

Random de-excitation

c.

By spontaneous emission

d.

By stimulated emission

Discuss
Answer: (a).Collisional de-excitation
Q45.
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

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q46.
Which of the following is not an advantage of electrochemical cells used for analysis of H₂S?

a.

Portable battery operated instrument

b.

Pocket sized instrument

c.

No pumps are needed

d.

No interference from background gases

Discuss
Answer: (d).No interference from background gases
Q47.
Which of the following methods are mainly used in combustible gas detection equipment?

a.

Lead acetate tape staining method

b.

Solid state sensor

c.

Gold film sensor

d.

Electrochemical cells

Discuss
Answer: (b).Solid state sensor
Q48.
Which of the following is not an advantage of solid state sensor used for analysis of H₂S?

a.

No sampling system

b.

It can be used in conditions involving vibration

c.

It can be used in corrosive atmosphere

d.

No interference from background gases

Discuss
Answer: (d).No interference from background gases
Q49.
Which is the compound that forms the stain in Lead Acetate Tape Staining method used for the analysis of Hydrogen Sulphide and what is the colour of the stain?

a.

Lead Sulphide, red colour

b.

Lead Sulphide, brown colour

c.

Hydrogen acetate, white colour

d.

Hydrogen acetate, green colour

Discuss
Answer: (b).Lead Sulphide, brown colour
Q50.
Which of the following methods is not used for detection of hydrogen sulphide?

a.

Lead acetate tape staining method

b.

Solid state sensor

c.

Chemiluminescence method

d.

Electrochemical cells

Discuss
Answer: (c).Chemiluminescence method
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