QC Lab Chemist Interview Questions and Answers

Distillation is a process of separating components of a mixture based on their boiling points.

• Distillation involves heating a mixture to vaporize the more volatile component, which is then condensed and collected.

• The diagram typically shows a distillation flask, condenser, and collection flask.

• Cracking is a process of breaking down larger hydrocarbon molecules into smaller ones.

• During Corona, I utilized my time by taking online courses, reading scientific literature, and prac...read more

Hydrogen sulfide is produced when hydrogen reacts with sulfur.

• The chemical equation for the reaction is: H2 + S -> H2S

• Hydrogen sulfide is a toxic gas with a characteristic rotten egg odor.

• The reaction can occur in various industrial processes, such as oil refining and wastewater treatment.

• Hydrogen sulfide can also be produced by bacteria in natural environments, such as swamps and hot springs.

Acidity and basicity are properties of substances that determine their ability to donate or accept protons.

• Acidity refers to the ability of a substance to donate protons (H+ ions). Acids increase the concentration of H+ ions in a solution.

• Basicity refers to the ability of a substance to accept protons. Bases increase the concentration of OH- ions in a solution.

• Acidity and basicity are measured on the pH scale, which ranges from 0 to 14. A pH of 7 is considered neutral, below ...read more

pH range is a scale used to specify the acidity or basicity of a solution. It ranges from 0 to 14, with 7 being neutral.

• pH range is from 0 to 14

• pH 7 is considered neutral

• Acidic solutions have pH values below 7

• Basic solutions have pH values above 7

• Some reactions are pH dependent, such as enzyme activity

Yes, I am experienced in handling HPLC instruments.

• I have experience in operating and maintaining HPLC instruments.

• I am familiar with troubleshooting and resolving issues related to HPLC.

• I have knowledge of various HPLC techniques and methods.

• I am proficient in using HPLC software and analyzing data.

• For example, in my previous job, I was responsible for running HPLC tests on pharmaceutical products and ensuring the accuracy of results.