IR Quiz
See how well you read IR spectra and spot key functional groups in about 10 minutes. Get a clear snapshot of your strengths with 16 free questions and no sign-up.
08:30
Scale Explorer
How the Scales are Structured
DATA-BASED USER COHORTS
Who Usually Takes This Test?
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
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See How You Compare
Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Below is a preview of how scores are typically distributed across each scale.
IR Spectroscopy Knowledge (ISK)
IR Spectroscopy Knowledge (ISK)
Average
6
Normal range
4 — 8
min.
0
max.
16
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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SAMPLE QUESTIONS
Example Questions From the Test
- Two N–H stretching bands around 3300-3500 cm⁻¹
- A broad O–H band extending from about 2500 to 3300 cm⁻¹
- A sharp C≡N band near 2250 cm⁻¹
- One or two weak aldehydic C–H bands near 2720 and 2820 cm⁻¹
- Tertiary amine
- Primary amine
- Alcohol
- Secondary amine
- Alcohol
- Ketone carbonyl
- Nitrile
- Primary amine
WHAT THE TEST MEASURES
About This Assessment
IR Quiz - Symptoms and Signs
Test how well you can interpret infrared spectra and use absorption patterns to identify likely compounds or functional groups. These 16 questions cover O–H, N–H, C=O, C≡N, and C–O signals, the fingerprint region, conjugation, ATR sampling, and common interpretation pitfalls. Your result is a practical summary of your current IR spectroscopy knowledge, not a laboratory certification. The quiz is free and requires no sign-up.
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