DEV AGRO (INDIA) CHEMICALS AND FERTILIZERS Chemist Interview Questions, Process, and Tips

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 ...read more

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...read more

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

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 use...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

Yes, software is commonly used for HPLC analysis.

• Software is used to control and monitor the HPLC instrument.

• It can also be used for data analysis and processing.

• Examples of HPLC software include Empower, Chromeleon, and OpenLAB.

• Software can improve accuracy and efficiency in HPLC analysis.