Analytical Instruments Quiz

AI Quiz – 2

Q 1: Beer Lambert’s law gives the relation between which of the following?

A) Reflected radiation and concentration
B) Energy absorption and concentration
C) Energy absorption and reflected radiation
D) Scattered radiation and concentration

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Q 2: Bolometer, a type of detector, is also known as:

A) Resistance temperature detector (RTD)
B) Thermistor
C) Thermocouple
D) Golay cell

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Q 3: Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of exactly 7.32 g for the mass of the standard. These results imply that the balance that was used is:

A) precise but not accurate
B) neither accurate nor precise
C) accurate but not precise
D) both accurate and precise

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Q 4: Identify the type of instrument calibration error(s) shown in this graph:

A) Span error
B) Hysteresis error
C) Zero error
D) Linearity error

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Q 5: As wavenumber ↑, wave energy

A) ↓
B) ↑
C) constant
D) no relation

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Q 6: How is the wavelength controlled in an FTIR spectrometer?

A) by a Michelson Interferometer
B) by a computer
C) by a laser
D) by calibration with a standard sample

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Q 7: How does the Nitrogen spectrum look?

A) The same as that of air
B) The same as that of carbon monoxide
C) It doesn’t have one!
D) None of these

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Q 8: In which region of the infrared spectrum would you expect to find a peak characteristic of a triple bond stretch?

A) 4000 – 3000 cm^{-1}
B) 2500 – 2000 cm^{-1}
C) 2000 – 1500 cm^{-1}
D) 1500 – 750 cm^{-1}

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Q 9: In infrared spectroscopy which frequency range is known as the fingerprint region?

A) 4000 – 1400 cm^{-1}
B) 1400 – 600 cm^{-1}
C) 900 – 600 cm^{-1}
D) 600 – 250 cm^{-1}

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Q 10: Which one is bending vibration

A) scissoring
B) wagging
C) rocking
D) twisting
E) all of above

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