The following are analytical instruments - VCE - SSCE Chemistry - Question 1 - 2005 - Paper 1
Question 1
The following are analytical instruments.
gas-liquid chromatograph
UV-visible spectrophotometer
atomic absorption spectrophotometer
Two features that are common... show full transcript
Worked Solution & Example Answer:The following are analytical instruments - VCE - SSCE Chemistry - Question 1 - 2005 - Paper 1
Step 1
A. detector and recorder.
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Answer
All three instruments (gas-liquid chromatograph, UV-visible spectrophotometer, and atomic absorption spectrophotometer) indeed utilize a detector to identify the presence of various compounds within a sample, as well as a recorder to document the obtained data. Thus, this option is correct.
Step 2
B. light source and detector.
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Answer
While light sources and detectors are crucial in some instruments like the spectrophotometers, they are not relevant to the gas-liquid chromatograph in the same sense. Therefore, this option is not entirely applicable to all three instruments.
Step 3
C. monochromator and recorder.
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Answer
Monochromators are mainly used in spectrophotometers but are not a feature of gas-liquid chromatography. Consequently, this option does not apply to all three instruments.
Step 4
D. light source and liquid sample.
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Answer
This option is not valid for all instruments listed. Gas-liquid chromatography, for example, does not use a light source or a liquid sample inherently. Therefore, this choice is incorrect.
