MCH-022 IGNOU Solved Assignment 2026-27
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Syllabus & Overview
MCH-022 Solved Assignment Overview: Separation and Spectroscopic Methods
The Tutor Marked Assignment (TMA) for MCH-022 (30% course weightage) focuses on experimental and theoretical validation of separation techniques and spectroscopic methodologies. Below are verified solutions for key blocks, structured to meet IGNOU’s academic rigor and submission requirements.
Core Syllabus Coverage (Official IGNOU Curriculum)
- Block-1: Solvent Extraction and Chromatographic Methods
- Solvent Extraction Principles: Phase equilibrium, distribution coefficient, and extraction efficiency calculations for organic/inorganic analytes.
- Chromatographic Theory: Partition, adsorption, and ion-exchange mechanisms with case studies on column chromatography (e.g., silica gel, alumina).
- Practical Applications: Separation of amino acids, dyes, and inorganic ions with Rf value derivations and peak resolution analysis.
- Block-3: Optical Spectroscopic Methods
- UV-Vis Spectroscopy: Beer-Lambert law applications, molar absorptivity calculations, and spectral interpretation of conjugated systems (e.g., benzene derivatives).
- Fluorescence Spectroscopy: Jablonski diagram, Stokes shift, and quenching mechanisms with examples from biological dyes (e.g., fluorescein).
- IR Spectroscopy: Group frequency analysis, fingerprint region interpretation, and sample preparation techniques (KBr pellet, Nujol mull).
- Block-5: Mass Spectroscopy and Hyphenated Techniques
- Mass Spectrometry Basics: Ionization methods (EI, CI, MALDI), mass-to-charge ratio (m/z) calculations, and fragmentation patterns (e.g., aliphatic vs. aromatic hydrocarbons).
- Hyphenated Techniques: GC-MS and LC-MS coupling principles, chromatographic separation integration with mass spectral data, and real-world applications (e.g., drug metabolism studies).
- Interpretation Workflow: Step-by-step analysis of mass spectra for unknown compounds, including molecular ion peak identification and isotopic distribution.
Assignment Structure and Word Limits
The solved assignment adheres to strict word limits per question:
- 500-word questions
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