Piramal Group Senior Research Associate Interview Questions and Answers for Experienced

The interview question asks about dissolution and method development, formulation handling, force degradation, lipid content analysis, and the use of membrane filters in methods.

• Dissolution refers to the process of a solid substance dissolving in a liquid medium.

• Method development involves creating and optimizing analytical methods for various purposes.

• Formulations handled can include tablets, capsules, suspensions, or...read more

Method development critical for accurate lipid analysis. Different lipids require different methods.

• Method development is crucial for accurate lipid analysis

• Different lipids require different methods for analysis

• Factors like polarity, solubility, and structure affect method development

• Examples of lipids include triglycerides, phospholipids, and cholesterol esters

The question asks for a reaction and prediction of H1 NMR under different conditions.

• Provide a detailed reaction involving a compound and reagent

• Discuss the possible H1 NMR shifts based on the reaction conditions

• Consider variations in temperature, solvent, and concentration for different predictions

LOQ stands for Limit of Quantitation as per ICH guidelines. It is the lowest concentration of an analyte that can be reliably measured.

• LOQ is determined by analyzing a series of samples with known concentrations of the analyte and calculating the standard deviation and slope of the calibration curve.

• The LOQ is typically defined as the concentration at which the signal-to-noise ratio is at least 10:1.

• It is important to ...read more

Specificity in assay method refers to the ability of the method to accurately measure only the target analyte without interference from other substances.

• Specificity is determined by testing the method with known standards and samples containing the target analyte as well as potential interfering substances.

• Cross-reactivity with similar compounds should be evaluated to ensure the method is specific to the target analyte...read more

Mechanical calibration of Dissolution Apparatus involves ensuring the apparatus is functioning accurately and consistently.

• Calibration involves checking the alignment of the shaft, speed of rotation, temperature control, and vessel centering.

• Regular calibration is necessary to ensure accurate and reliable dissolution testing results.

• Examples of calibration methods include using standard weights for balance calibration ...read more

Solubility studies are conducted to determine the ability of a substance to dissolve in a particular solvent.

• Solubility studies involve testing the solubility of a substance in different solvents.

• Various methods such as shake flask method, equilibrium solubility method, and kinetic solubility method can be used.

• Factors affecting solubility include temperature, pH, and particle size.

• Analytical techniques like UV-Vis spe...read more

Chemical reactions involve the breaking and forming of chemical bonds to create new substances with different properties.

• Chemical reactions involve the rearrangement of atoms to form new substances

• Reactants are the starting materials and products are the end result of a chemical reaction

• Chemical reactions can be classified as exothermic or endothermic based on energy changes

• Catalysts can speed up chemical reactions wit