MCQs Quiz

Introduction: Gel filtration chromatography, also known as size-exclusion chromatography (SEC), is a vital technique in pharmaceutical analysis for separating molecules by size. B. Pharm students should understand how porous gel beads (e.g., Sephadex, Sephacryl) fractionate proteins, peptides, polymers, and drug aggregates without altering biological activity. Key applications include desalting, buffer exchange, removal of aggregates, molecular … Read more

Gel chromatography, also called size-exclusion chromatography (SEC) or gel filtration, separates molecules by size using porous stationary phases. This introduction explains the principle and theory—pore size, exclusion limit, partition coefficient (Kav), elution volume, void and total column volumes—and describes instrumentation such as columns, gels (Sephadex, agarose, polyacrylamide), pumps, detectors and fraction collectors. Practical considerations for … Read more

Ion exchange chromatography (IEC) is a fundamental separation technique in pharmaceutical analysis, widely used for drug purification, protein separation, and formulation development. B. Pharm students should learn about ion-exchange resins, strong and weak cation and anion exchangers, buffer selection, pH effects, selectivity, capacity, and elution strategies to apply IEC effectively in quality control, impurity removal, … Read more

Introduction Ion exchange is a vital separation technique in pharmaceutical analysis and formulation. Understanding factors affecting ion exchange — such as resin type, functional groups, exchange capacity, selectivity, pH, ionic strength, temperature, flow rate and bead porosity — helps B. Pharm students optimize the ion exchange process and methodology. Practical knowledge of column packing, regeneration, … Read more

Introduction: Ion exchange resins are crosslinked polymeric beads (commonly polystyrene‑divinylbenzene) bearing ionizable functional groups that exchange ions with surrounding media. Key properties include exchange capacity (meq/g), selectivity, degree of crosslinking, water uptake, kinetics, and stability. Mechanistically, ion exchange proceeds by reversible equilibrium influenced by charge, hydrated radius, pH, ionic strength, and Donnan effects. In pharmaceutics, … Read more

Ion exchange chromatography is a core separation technique in pharmaceutical analysis that separates molecules by charge using charged stationary phases (resins). In B. Pharm labs it’s essential for protein and peptide purification, drug impurity profiling, formulation characterization, and quality control. Key concepts include stationary phase chemistry (strong vs weak exchangers), functional groups (sulfonic, carboxylic, quaternary … Read more

Introduction: Instrumentation of HPLC and its pharmaceutical applications MCQs With Answer provides B.Pharm students with a practical, focused review of high-performance liquid chromatography (HPLC) instrumentation, detectors, columns, mobile phases, and method validation. This introduction covers essential keywords such as HPLC, chromatography, stationary phase, mobile phase, pumps, detectors (UV, PDA, RID, MS), system suitability, assay, impurity … Read more

High performance liquid chromatography (HPLC) is an essential analytical technique for B. Pharm students, focusing on separation, identification, and quantification of pharmaceutical compounds. This introduction covers core principles and chromatographic theory: mobile phase and stationary phase interactions, retention time, capacity factor (k′), selectivity (α), resolution, column efficiency (N), van Deemter theory, isocratic and gradient elution, … Read more

Introduction: Gas chromatography (GC) is a core analytical technique in pharmaceutical analysis, providing high resolution, sensitivity and rapid separation of volatile and semi-volatile compounds. This overview covers the advantages (speed, selectivity, quantitative accuracy, automation), limitations (inability to analyze non‑volatile or thermally labile compounds without derivatization, matrix interferences, limited chiral separation) and key pharmaceutical applications such … Read more

Derivatization techniques and temperature programming in GC are essential topics for B. Pharm students learning gas chromatography (GC) and GC‑MS. Derivatization (silylation, acylation, alkylation) improves volatility, thermal stability, and detectability of polar drugs and metabolites; common reagents include BSTFA, MSTFA, TMCS and BSA. Temperature programming (initial temp, ramp rate, hold time, final temp) optimizes separation … Read more