Viatris Interview Questions and Answers

Gas chromatography is a technique used to separate and analyze volatile compounds in a mixture.

• The sample is vaporized and passed through a column filled with a stationary phase and a carrier gas.

• Different compounds interact differently with the stationary phase and are separated based on their retention time.

• The separated compounds are detected and identified based on their unique retention times.

• Gas chromatography is commonly used in forensic science, environmental analysis...read more

Moisture content is the amount of water present in a substance. It is determined by the principle of drying and weighing.

• Moisture content is expressed as a percentage of the weight of the wet material.

• It is important to measure moisture content in industries such as food, pharmaceuticals, and construction.

• The principle of drying and weighing involves heating the substance to remove all the water and then weighing it to determine the amount of water present.

• Moisture content ca...read more

Molarity is the concentration of a solution expressed as the number of moles of solute per liter of solution. Normality is the concentration of a solution expressed as the number of equivalents of solute per liter of solution.

• Molarity is calculated by dividing the number of moles of solute by the volume of the solution in liters.

• Normality is calculated by multiplying the molarity of the solution by the number of equivalents per mole of solute.

• Molarity is commonly used in chem...read more

UV visible refers to the measurement of light absorption and transmission in the ultraviolet and visible regions of the electromagnetic spectrum.

• UV visible spectroscopy is a technique used to determine the concentration of a substance in a sample by measuring the amount of light absorbed or transmitted by the sample.

• It is based on the principle that molecules absorb light at specific wavelengths, which can be used to identify and quantify the substance.

• UV visible spectroscopy...read more

HPLC stands for High Performance Liquid Chromatography. It is a technique used to separate, identify, and quantify components in a mixture.

• HPLC uses a liquid mobile phase and a solid stationary phase to separate components based on their chemical properties.

• The principle behind HPLC is that different components in a mixture will interact differently with the stationary phase, causing them to elute at different times.

• HPLC is commonly used in pharmaceuticals, food and beverage,...read more

FT-IR stands for Fourier Transform Infrared Spectroscopy. It is a technique used to analyze the chemical composition of a sample.

• FT-IR measures the absorption or transmission of infrared light by a sample.

• It can be used to identify functional groups in organic compounds.

• FT-IR is commonly used in forensic science, pharmaceuticals, and materials science.

• The principle behind FT-IR is based on the fact that different chemical bonds absorb infrared radiation at different frequenci...read more