Thinkthrough Consulting Interview Questions and Answers

Titrations are used to determine the concentration of a substance in a solution. There are several types of titrations.

• Acid-base titration

• Redox titration

• Complexometric titration

• Precipitation titration

• Non-aqueous titration

GC principal refers to the separation of components in a mixture based on their vapor pressure and affinity for the stationary phase.

• GC stands for Gas Chromatography

• The principle involves the use of a stationary phase and a mobile phase

• The stationary phase can be a solid or a liquid coated on a solid support

• The mobile phase is usually an inert gas such as helium or nitrogen

• The sample is injected into the column and the components are separated based on their vapor pressure an...read more

GLP stands for Good Laboratory Practice, a set of guidelines for ensuring quality and reliability in non-clinical laboratory studies.

• GLP is a quality system concerned with the organizational process and conditions under which non-clinical health and environmental safety studies are planned, performed, monitored, recorded, archived, and reported.

• It ensures that the data generated in the study is accurate, reliable, and traceable.

• GLP applies to all non-clinical safety studies, ...read more

Standardization of HCl solution involves titration with a standardized NaOH solution.

• Prepare a standardized NaOH solution of known concentration.

• Take a measured volume of HCl solution in a flask.

• Add a few drops of indicator to the flask.

• Titrate the HCl solution with the standardized NaOH solution until the endpoint is reached.

• Calculate the concentration of the HCl solution using the volume and concentration of NaOH used.

• Repeat the titration at least three times to ensure accu...read more

Mobile phase is the liquid or gas that carries the sample through the chromatography column.

• The type of mobile phase depends on the type of chromatography being used.

• Common mobile phases include water, methanol, acetonitrile, and various buffer solutions.

• In gas chromatography, the mobile phase is typically an inert gas such as helium or nitrogen.

• The choice of mobile phase can affect the separation and resolution of the sample components.