Tech Mahindra Interview Questions and Answers

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

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

• The stationary phase is typically a solid or liquid packed into a column, while the mobile phase is a liquid that flows through the column.

• Components in the mixture interact differently with the stationary and mobile phases, causing th...read more

Lambert Beer's law relates the concentration of a solution to the amount of light absorbed by the solution.

• The law states that the absorbance of a solution is directly proportional to its concentration and the path length of the light through the solution.

• It is commonly used in spectrophotometry to determine the concentration of a substance in a solution.

• The law assumes that the solution is homogeneous, the absorbing species is in a single form, and the incident light is mono...read more

A pH meter is a scientific instrument used to measure the acidity or alkalinity of a substance.

• Measures the concentration of hydrogen ions in a solution

• Range typically from 0 to 14, with 7 being neutral

• Used in various industries such as food and beverage, pharmaceuticals, and environmental monitoring

GC stands for Gas Chromatography. Its principle is based on the separation of components of a mixture based on their partitioning between a stationary phase and a mobile phase.

• GC separates components of a mixture based on their partitioning between a stationary phase and a mobile phase

• It involves injecting a sample into a heated inlet, vaporizing it and then separating the components using a column

• The separated components are then detected and analyzed based on their retentio...read more

HPLC is a chromatographic technique used to separate, identify, and quantify components in a mixture based on their interactions with a stationary phase and a mobile phase.

• HPLC stands for High Performance Liquid Chromatography.

• It involves passing a liquid sample through a column packed with a stationary phase, where different components interact differently and are separated based on their affinity for the stationary phase.

• The separated components are then detected and quanti...read more