Unichem Laboratories Quality Control Analyst Interview Questions and Answers

GC is used for volatile compounds, while HPLC is used for non-volatile compounds.

• GC stands for Gas Chromatography, while HPLC stands for High Performance Liquid Chromatography.

• GC is used for separating and analyzing volatile compounds, such as gases and liquids that can be vaporized without decomposition.

• HPLC is used for separating and analyzing non-volatile compounds, such as pharmaceuticals, proteins, and carbohydrat...read more

IR and UV spectroscopy are analytical techniques that utilize the absorption of infrared and ultraviolet-visible light to identify and quantify substances.

• IR spectroscopy measures the absorption of infrared radiation by a sample to identify functional groups in organic molecules.

• UV spectroscopy measures the absorption of ultraviolet-visible light by a sample to determine the presence of conjugated systems in organic co...read more

OOS stands for Out of Specification and refers to test results that fall outside the acceptable range. Incidents are unexpected events that may impact product quality.

• OOS results indicate a deviation from the specified requirements or standards.

• Incidents are unexpected events that may impact product quality or safety.

• OOS results may require investigation to determine the root cause and corrective actions.

• Examples of in...read more

Data integrity refers to the accuracy, consistency, and reliability of data throughout its lifecycle.

• Ensuring data is accurate and reliable

• Preventing unauthorized access or modifications

• Maintaining consistency and completeness of data

• Implementing security measures to protect data integrity

I am shifting jobs to pursue better career growth opportunities and to utilize my skills and experience in a new environment.

• Seeking better career growth opportunities

• Utilizing skills and experience in a new environment

• Exploring new challenges and responsibilities

Detectors in HPLC include UV-Vis, fluorescence, refractive index, and mass spectrometry.

• UV-Vis detector measures absorbance of UV or visible light by the analyte.

• Fluorescence detector measures fluorescence emitted by the analyte when excited by light.

• Refractive index detector measures changes in refractive index of the eluent.

• Mass spectrometry detector measures mass-to-charge ratio of ions produced from analyte.

UV and FTIR principles are analytical techniques used for identifying and analyzing chemical compounds based on their absorption of ultraviolet-visible light and infrared radiation, respectively.

• UV spectroscopy involves measuring the absorption of UV or visible light by a sample to determine its concentration or purity.

• FTIR spectroscopy measures the absorption of infrared radiation by a sample to identify functional gr...read more