Analytical Instrumentation Mock Test 5

10%

Question 1 of 10

1. Which of these biosensors use the principle of heat released or absorbed by a reaction?

Piezo-electric biosensors

Optical biosensors

Potentiometric biosensor

Calorimetric biosensors

Question 1 of 10

Question 2 of 10

2. Which of the following is not a type of ground in ion analyser?

Chassis and electrostatic ground

Reference ground

Digital ground

Analog ground

Question 2 of 10

Question 3 of 10

3. Ion analysers need calibration once in which of the following durations?

Every two or three hours

Every 48 hours

Every 24 hours

Every nine or ten hours

Question 3 of 10

Question 4 of 10

4. Gel filled combination electrodes operate in a wide temperature range.

True

False

Question 4 of 10

Question 5 of 10

5. In which of the following ways can the disadvantages of chopper amplifier type pH meter be overcome?

Using modern design

Using digital design

Using zero corrected DC amplifier

Using vibrating condenser

Question 5 of 10

Question 6 of 10

6. If an instrument fails to balance at zero, it is most likely that the electrodes are defective.

False

True

Question 6 of 10

Question 7 of 10

7. 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, E_o is the reference potential and A is the level of fluoride ions in solution?

E=E_o-0.0896 log A

E=E_o+0.0896 log A

E=E_o+0.0591 log A

E=E_o-0.0591 log A

Question 7 of 10

Question 8 of 10

8. Which of the following can be used to provide automatic temperature compensation?

Thermometer

Calibration for different temperatures

Proper insulation

Thermistor

Question 8 of 10

Question 9 of 10

9. The gel used in combination electrodes does not have which of the following characteristic?

Polyacrylamide

Non-toxic

Inorganic material

USP grade

Question 9 of 10

Question 10 of 10

10. Which of the following is not the characteristic of ion selective electrodes?

It is fragile

It is insensitive to many ions

Easy to use

Available in different sizes and shapes

Question 10 of 10