CPC Cheat Sheet 2026

The 30 highest-yield CPC facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Why is proper chemical labeling important in a laboratory setting? → To prevent accidents and ensure proper handling
2. Which of the following is an example of a Type B uncertainty evaluation in measurement uncertainty estimation? → Using calibration certificate uncertainty values and equipment specifications
3. What type of isomerism is exhibited by [Co(NH3)4Cl2]NO2 and [Co(NH3)4ClNO2]Cl? → Ionization isomerism
4. In an octahedral crystal field, which d-orbitals constitute the eg set? → dx²−y² and dz²
5. What is the hybridization of the central nickel atom in [Ni(CN)4]2−? → dsp2
6. What is the correct IUPAC name for the complex ion [Fe(CN)6]4−? → Hexacyanoferrate(II)
7. Which statement correctly describes an ideal gas according to kinetic-molecular theory? → Molecules have negligible volume and no intermolecular forces
8. In analytical chemistry, precision refers to: → The reproducibility of repeated measurements under the same conditions
9. Which process describes the flow of genetic information according to the central dogma of molecular biology? → DNA → RNA → Protein
10. Eutrophication of water bodies is primarily caused by excess inputs of which nutrients? → Nitrogen and phosphorus
11. In a Diels-Alder reaction, the diene must be in which conformation for the reaction to proceed? → s-cis
12. What is the coordination number of the central metal ion in [Co(NH3)6]3+? → 6
13. The color of transition metal coordination compounds arises primarily from which electronic transition? → d-d transitions
14. How can statistical methods be used in R&D? → To quantify data variability and assess result significance
15. Which reaction mechanism involves the simultaneous breaking and forming of bonds in a single concerted step? → SN2
16. Which of the following best describes a Grignard reagent acting as a nucleophile? → Carbon-metal bond donating electrons to an electrophile
17. Which coenzyme derived from niacin (vitamin B3) is essential for oxidation-reduction reactions in metabolism? → NAD+ / NADH
18. The isoelectric point (pI) of an amino acid or protein is the pH at which: → The net charge of the molecule is zero
19. Why is temperature control important in chemical analysis? → To ensure consistency and accuracy of results
20. Which of the following is classified as a π-acceptor (pi-acceptor) ligand? → CO
21. Why is pH measurement important in chemical analysis? → To determine the acidity or alkalinity of a solution
22. Why is calibration important in chemical instrumentation? → To ensure accuracy and reliability in measurements
23. What is the ground-state electron configuration of Fe2+? → [Ar] 3d6
24. What is the role of hazard identification in laboratory safety? → To identify potential dangers and implement safety measures
25. What is the purpose of a Material Safety Data Sheet (MSDS)? → To offer safety guidelines and emergency procedures for chemicals
26. What is the role of standard solutions in chemical analysis? → To calibrate instruments and provide a known reference
27. The purpose of running a method blank in environmental analysis is to: → Identify contamination introduced by the analytical process itself
28. What should be done in case of a chemical spill in the laboratory? → Evacuate the area and follow emergency protocols
29. A control chart in a laboratory quality system shows a sample mean outside the ±3σ control limits. This indicates: → A likely out-of-control condition requiring investigation
30. Which spectroscopic technique measures the absorption of microwave radiation to give information about molecular bond lengths and angles? → Rotational (microwave) spectroscopy