Analytical Instrumentation Mock Test 3

10%

Question 1 of 10

1. Which of the following is not the characteristics of Indium arsenide photovoltaic detector used in infrared analyzers for hydrocarbons?

Has maximum detectivity at 3.4µm

It operates at ambient temperature

Sensitivity increases at longer wavelength

It has no response to radiation of wavelength greater than 4µm

Question 1 of 10

Question 2 of 10

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

Gas chromatography

Paper electrophoresis

Resin column chromatography

Ion exchange chromatography

Question 2 of 10

Question 3 of 10

3. In the Beckman instrument, the flow rate recommended when the sample enters through a porous diffusion disc is which of the following?

200-300 cc/min

100-200 cc/min

50-250 cc/min

40-60 cc/min

Question 3 of 10

Question 4 of 10

4. Polarographic cells are used to measure the partial pressure of gases only in static gas monitoring systems and not in continuous streams.

False

True

Question 4 of 10

Question 5 of 10

5. Which of the following UV absorbance detectors provide a real time spectrum of the component of interest?

Scanning wavelength detector

Variable wavelength detector

Fixed wavelength detector

Continuous wavelength detector

Question 5 of 10

Question 6 of 10

6. 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 6 of 10

Question 7 of 10

7. In Automatic amino-acid analyzer, the sample containing ___________ of each amino compound is introduced at the top of the ion exchange column.

1 to 10 moles

1 to 10 µmoles

0.05 to 2 moles

0.05 to 2 µmoles

Question 7 of 10

Question 8 of 10

8. To improve paramagnetic oxygen analyzer, the quartz suspension must be replaced with which of the following?

Phosphor-bronze

Gold-palladium

Antimony

Platinum-iridium

Question 8 of 10

Question 9 of 10

9. Vibration excitation occurs only if the sample has hetero-atomic molecules.

True

False

Question 9 of 10

Question 10 of 10

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

Change in inductance

Change in concentration

Change in resistance

Change in capacitance

Question 10 of 10