pH Meters and Ion Analysers MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on pH Meters and Ion 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 pH Meters and Ion 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 pH Meters and Ion Analysers mcq questions that explore various aspects of pH Meters and Ion Analysers problems. Each MCQ is crafted to challenge your understanding of pH Meters and Ion 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 pH Meters and Ion Analysers MCQs are your pathway to success in mastering this essential Analytical Instrumentation topic.

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pH Meters and Ion Analysers MCQs | Page 8 of 16

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Q71.
The difference between measured activity and actual concentration becomes higher at higher concentration. Is this statement true or false?

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q72.
Ion selective electrodes have ________ linear range and _________ detection limit than the pH electrode.

a.

Lower, lower

b.

Lower, higher

c.

Higher, lower

d.

Higher, higher

Discuss
Answer: (b).Lower, higher
Q73.
In Ammonia electrode, diffusion of dissolved ammonia occurs through the membrane until which of the following conditions occur?

a.

Concentration becomes equal on both sides

b.

Activity becomes equal on both sides

c.

Partial pressure becomes equal on both sides

d.

Differential pressure is low

Discuss
Answer: (c).Partial pressure becomes equal on both sides
Q74.
When electrode potential response is plotted as a function of ammonia concentration on a semi-log graph, the graph obtained will be ____________

a.

A straight line

b.

Parabolic

c.

Sigmoidal

d.

A curve

Discuss
Answer: (a).A straight line
Q75.
How can samples above 1M in ammonia concentration be measured using ammonia electrode?

a.

It must be diluted and measured

b.

It cannot be measured

c.

The electrode has to be modified for measuring

d.

It can be measured directly

Discuss
Answer: (a).It must be diluted and measured
Q76.
The dilution of solution must not reduce the level of ammonia below _________

a.

10⁻² M

b.

10⁻⁵ M

c.

10⁻⁸ M

d.

10⁻⁹ M

Discuss
Answer: (b).10⁻⁵ M
Q77.
Which of the following factors does not the reproducibility of the ammonia electrode?

a.

Temperature

b.

Drift

c.

Noise

d.

Dilution

Discuss
Answer: (d).Dilution
Q78.
The performance of ammonia electrode is not affected by sample colour and turbidity.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q79.
In fluoride ion electrode, the potential corresponding to level of the fluoride ion is described by which of the following equations when E is the measured electrode potential, E₀ is the reference potential and A is the level of fluoride ions in solution?

a.

E=E₀+0.0591 log A

b.

E=E₀-0.0591 log A

c.

E=E₀+0.0896 log A

d.

E=E₀-0.0896 log A

Discuss
Answer: (b).E=E₀-0.0591 log A
Q80.
What does TISAB which is used to overcome interferences stand for?

a.

Total Isolation Strength Absolute Buffer

b.

Total Ionic Strength Absolute Buffer

c.

Total Ionic Strength Adjustment Buffer

d.

Total Isolation Strength Adjustment Buffer

Discuss
Answer: (c).Total Ionic Strength Adjustment Buffer
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