TCS Interview Questions and Answers

Quality assurance focuses on preventing defects while quality control focuses on identifying and correcting defects.

• Quality assurance is a proactive process that involves planning, designing, and implementing processes to prevent defects from occurring.

• Quality control is a reactive process that involves identifying defects and taking corrective action to eliminate them.

• Quality assurance is focused on the entire process, while quality control is focused on the end product.

• Qual...read more

Molarity is the concentration of a solution in terms of the number of moles of solute per liter of solution, while molality is the concentration of a solution in terms of the number of moles of solute per kilogram of solvent.

• Molarity is denoted by M, while molality is denoted by m.

• Molarity is affected by temperature changes, while molality is not.

• Molarity is used in chemical reactions, while molality is used in colligative properties.

• Molarity is dependent on the volume of the...read more

The principle of UV-spectrophotometer is based on the absorption of ultraviolet (UV) light by molecules.

• UV-spectrophotometer measures the absorbance of UV light by a sample.

• The absorbance is directly proportional to the concentration of the absorbing species in the sample.

• The principle is used in various applications such as quantitative analysis, purity determination, and kinetics studies.

• UV-spectrophotometer operates in the UV range of electromagnetic spectrum, typically be...read more

HPLC stands for High Performance Liquid Chromatography. It is a principle used in analytical chemistry 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 interactions with the stationary phase.

• The principle is based on the differential partitioning of components between the mobile and stationary phases.

• Components with stronger interactions with the stationary phase will...read more

Normality refers to the state of being normal or conforming to a standard or average.

• Normality is a concept used in various fields to define what is considered typical or expected.

• It is often used in statistics to describe the distribution of data points around a mean.

• In psychology, normality refers to behavior that is within the range of what is considered socially acceptable.

• Normality can also be subjective, varying across cultures and contexts.

• Examples of normality can inc...read more

Friability is the tendency of a solid substance to crumble or break into small pieces when subjected to mechanical stress.

• Friability is a measure of the durability or strength of a material.

• It is commonly used in the pharmaceutical industry to assess the quality of tablets or capsules.

• The friability test involves subjecting a sample of the product to tumbling in a rotating drum.

• The percentage weight loss of the sample after the test is an indicator of its friability.

• High fria...read more