Analytical Instrumentation Mock Test 3

10%

Question 1 of 10

1. Which of the following is used in magnetic wind instruments to determine the amount of oxygen?

Change in resistance

Change in concentration

Change in inductance

Change in capacitance

Question 1 of 10

Question 2 of 10

2. Which of the following concepts are not used in magnetic wind instruments?

By measuring temperature using thermometer

Displacement of membrane by magnetised oxygen

Change in resistance due to cooling by magnetic wind

Difference in pressure difference between two gases having varying concentration of oxygen

Question 2 of 10

Question 3 of 10

3. Which of the following is true about the two charged vanes that produce electric field in Paramagnetic oxygen analyzer?

Both the vanes should have the same potential as the test body

Both the vanes should be at higher potential than the test body

Both the vanes should be at lower potential than the test body

One vane should be at higher potential than the test body and the other vane should be at lower potential

Question 3 of 10

Question 4 of 10

4. The block diagram for parallel mode analyser of NO and NO2 is given below. Identify the unmarked block in the diagram.

NO₂ to NO reduction

NO Analyser

NO₂ remover

Difference

Question 4 of 10

Question 5 of 10

5. Which of the following methods is not used for detection of hydrogen sulphide?

Electrochemical cells

Solid state sensor

Chemiluminescence method

Lead acetate tape staining method

Question 5 of 10

Question 6 of 10

6. Magnetic wind analyzers are also known as which of the following?

Hot wire analyzers

Thermo-analytical analyzers

Electro-magnetic analyzers

Thermo-magnetic analyzers

Question 6 of 10

Question 7 of 10

7. Which kind of filter is used in improved version of infrared gas analyzer at the output end?

Wide bandpass filter

High pass filter

Low pass filter

Narrow bandpass filter

Question 7 of 10

Question 8 of 10

8. In polarographic cell when potential is applied, oxygen is reduced at __________ when KCl is present.

Electrolyte

Both the electrode

Anode

Cathode

Question 8 of 10

Question 9 of 10

9. Which one of the following methods is the most suitable for amino-acid analysis?

Ion exchange chromatography

Resin column chromatography

Paper electrophoresis

Gas chromatography

Question 9 of 10

Question 10 of 10

10. 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?

Lead Sulphide, red colour

Hydrogen acetate, white colour

Lead Sulphide, brown colour

Hydrogen acetate, green colour

Question 10 of 10