MCQs Quiz

Concepts of oxidation and reduction MCQs With Answer introduce essential redox principles crucial for B. Pharm students studying pharmaceutical chemistry, drug metabolism, and analytical methods. This concise guide covers electron transfer, oxidation states, oxidizing and reducing agents, half-reactions, redox titrations, electrode potentials, and biological redox systems like cytochrome P450 and NAD+/NADH. Emphasis is placed on … Read more

Diazotisation titration is a key analytical method in pharmaceutical analysis for quantifying diazotizable compounds, especially primary aromatic amines. B.Pharm students must grasp the chemical principle—generation of diazonium salts by nitrous acid under acidic, low-temperature conditions—and how this reaction is applied in titrations, endpoint detection, and quality control. Important keywords include diazotisation titration, nitrous acid, sodium … Read more

Principles and methods of diazotisation titration MCQs With Answer Diazotisation titration covers the chemical principles, reagents, procedure and analytical applications of forming diazonium salts from primary aromatic amines and nitrite. B.Pharm students will learn mechanism of nitrosation, role of NaNO2/HCl to generate HNO2, low-temperature control, azo-coupling (Griess reaction with sulfanilic acid and NED), endpoint detection … Read more

Estimation of barium sulphate by gravimetry MCQs With Answer Gravimetric estimation of barium sulphate is a fundamental analytical technique in pharmaceutical analysis, emphasizing accuracy, precision, and proper laboratory technique. This topic covers precipitation of sulphate as BaSO4, choice of reagents (e.g., barium chloride), conditions for complete precipitation, digestion, filtration, washing to remove impurities, ignition and … Read more

Introduction: Co-precipitation and post-precipitation phenomena are essential concepts in pharmaceutical analysis and gravimetric methods for B.Pharm students. Understanding co-precipitation — the unwanted incorporation or surface adsorption of impurities during precipitation — and post-precipitation changes such as aging, ripening, peptization, and Ostwald ripening helps ensure accurate assays, quality control, and impurity management. Key keywords include co-precipitation, … Read more

Purity of precipitate in gravimetric analysis is a fundamental concept for B.Pharm students performing quantitative determinations in pharmaceutical analysis. Understanding how precipitation mechanisms, co-precipitation (occlusion, adsorption, isomorphous substitution), masking agents, and particle growth affect precipitate purity helps ensure accurate assays. Key procedural controls—pH, temperature, digestion, rate of reagent addition, washing, filtration, drying or ignition, and … Read more

Introduction Gravimetric analysis is a classical quantitative technique in analytical chemistry widely used in B. Pharm courses to determine the amount of an analyte by measuring the mass of a pure, stable compound. Key principles and steps in gravimetric analysis include precipitation, digestion, filtration, washing, drying or ignition, and accurate weighing. Mastery of precipitant selection, … Read more

Estimation of calcium gluconate by complexometric titration MCQs With Answer is an essential topic for B. Pharm students learning quantitative analysis of calcium in pharmaceutical formulations. This introduction covers principles of complexometric titration using EDTA, stoichiometry of Ca–EDTA complexes, role of buffers and indicators, sample preparation of calcium gluconate, interference and masking, endpoint detection, standardization … Read more

Introduction: Estimation of magnesium sulphate by complexometric titration is a fundamental pharmaceutical analysis technique for B.Pharm students. This method uses EDTA (ethylenediaminetetraacetic acid) as the titrant to form a stable 1:1 chelate with Mg2+ under controlled pH (usually ammonia buffer around pH 10). Key aspects include choice of indicator (e.g., Eriochrome Black T or Calmagite), … Read more

Masking and demasking agents are essential concepts in analytical chemistry for B.Pharm students, especially in complexometric titrations and selective assays. Masking agents selectively bind interfering ions, forming stable, non-reactive complexes to protect the analyte, while demasking agents release those ions when analysis of the masked species is needed. Understanding mechanisms, selection criteria, pH dependence, stability … Read more