CY6151 Engineering Chemistry I Previous Year Question Paper
To make the students conversant with basics of polymer chemistry.
To make the student acquire sound knowledge of second law of thermodynamics and second law based derivations of importance in engineering applications in all disciplines.
To acquaint the student with concepts of important photo-physical and photo-chemical processes and spectroscopy.
To develop an understanding of the basic concepts of phase rule and its applications to single and two component systems and appreciate the purpose and significance of alloys.
To acquaint the students with the basics of nano materials, their properties and applications.
UNIT I POLYMER CHEMISTRY
Introduction: Classification of polymers – Natural and synthetic; Thermoplastic and Thermosetting. Functionality – Degree of polymerization. Types and mechanism of polymerization: Addition (Free Radical, cationic and anionic); condensation and copolymerization. Properties of polymers: Tg, Tacticity, Molecular weight – weight average, number average and polydispersity index. Techniques of polymerization: Bulk, emulsion, solution and suspension. Preparation, properties and uses of Nylon 6,6, and Epoxy resin.
UNIT II CHEMICAL THERMODYNAMICS
Terminology of thermodynamics – Second law: Entropy – entropy change for an ideal gas, reversible and irreversible processes; entropy of phase transitions; Clausius inequality. Free energy and work function: Helmholtz and Gibbs free energy functions (problems); Criteria of spontaneity; GibbsHelmholtz equation (problems); Clausius-Clapeyron equation; Maxwell relations – Van‟t Hoff isotherm and isochore(problems).
UNIT III PHOTOCHEMISTRY AND SPECTROSCOPY
Photochemistry: Laws of photochemistry – Grotthuss–Draper law, Stark–Einstein law and LambertBeer Law. Quantum efficiency – determination- Photo processes – Internal Conversion, Inter-system crossing, Fluorescence, Phosphorescence, Chemiluminescence and Photo-sensitization. Spectroscopy: Electromagnetic spectrum – Absorption of radiation – Electronic, Vibrational and rotational transitions. UV-visible and IR spectroscopy – principles, instrumentation (Block diagram only).
UNIT IV PHASE RULE AND ALLOYS
Phase rule: Introduction, definition of terms with examples, One Component System- water system – Reduced phase rule – Two Component Systems- classification – lead-silver system, zinc-magnesium system. Alloys: Introduction- Definition- Properties of alloys- Significance of alloying, Functions and effect of alloying elements- Ferrous alloys- Nichrome and Stainless steel – heat treatment of steel; Non-ferrous alloys – brass and bronze.
UNIT V NANOCHEMISTRY
Basics – distinction between molecules, nanoparticles and bulk materials; size-dependent properties. nanoparticles: nano cluster, nano rod, nanotube(CNT) and nanowire. Synthesis: precipitation, thermolysis, hydrothermal, solvothermal, electrodeposition, chemical vapour deposition, laser ablation; Properties and applications
CY6151 Engineering Chemistry I Previous Year Question Paper Regulation 2013 question paper