Analytical Instrumentation Mock Test 9

10%

Question 1 of 10

1. Which of the following is the disadvantage of using three stage tubes?

Reduced resolution

Heavy

Bulky construction

Complex

Question 1 of 10

Question 2 of 10

2. Better sensitivity with good resolution can be achieved by concentrating the sample inside which of the following?

Sample cell

Sample tube

Cylindrical tube

Micro cell

Question 2 of 10

Question 3 of 10

3. Which of the following is normally done to convert the sample into the gaseous state?

Sample is heated

Sample is pressurized

Sample is cooled

Chemical reactions are made to occur

Question 3 of 10

Question 4 of 10

4. Which of the following has to be done to increase the resolution of the quadrupole mass spectrometer?

Increasing the length of the drift tube

Increasing distance between detector and reflectron

Increasing difference between the individual rf accelerating stages

Increasing the rod length of the electrode

Question 4 of 10

Question 5 of 10

5. Which of the following is not an advantage of mass spectrometer?

Simple

Rugged

High sensitivity

Unlimited mass range

Question 5 of 10

Question 6 of 10

6. Which of the following techniques do not enhance sensitivity by a factor of 10 at normal operating conditions?

Time averaging

Optimization of instrumental parameters

Optimization of noise

Optimization of sample volume

Question 6 of 10

Question 7 of 10

7. Inlet system is also known as which of the following?

Sample handling system

Sample reservoir

Element injection system

Initial system

Question 7 of 10

Question 8 of 10

8. The electric sector field is not subject to hysteresis.

True

False

Question 8 of 10

Question 9 of 10

9. Which of the following components need to be added in order to increase the resolution?

Detector

Magnetic sector

Ion source

Electric sector

Question 9 of 10

Question 10 of 10

10. Which of the following is not involved in signal averaging?

A system to repeatedly scan the spectral region of interest

A system to coherently add individual spectra

Some storage device to store information

Sweep generator

Question 10 of 10