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AKTU Applied Chemistry for Soil, Water and Agro Systems Lab (AAS152H / AAS252H) Syllabus PDF – B.Tech 1st Year
Applied Chemistry for Soil, Water and Agro Systems Lab AAS152H / AAS252H
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Official AKTU syllabus of Applied Chemistry for Soil, Water and Agro Systems Lab (AAS152H / AAS252H) for B.Tech 1st Year – 1 credits, L-T-P 0-0-2. Read the unit-wise course content, course outcomes, evaluation pattern and recommended books online, or download the PDF.
Syllabus — Applied Chemistry for Soil, Water and Agro Systems Lab
Download PDFAAS152H / AAS252H · 1 credits · L-T-P 0-0-2
Course Objectives
- To determine the chemical properties of soil including pH, organic matter, and nutrient content
- To perform water quality analysis relevant to irrigation and agro-processing
- To identify and characterise fertilisers and agrochemicals by chemical tests
- To perform food quality analysis of agro-products
- To apply green chemistry principles in sustainable agricultural systems
List of Experiments
| Exp. | Title | Description / Objective |
| 1 | Determination of Soil pH and Electrical Conductivity | Measure pH and electrical conductivity (EC) of soil samples (1:2.5 soil : water suspension) using pH meter and conductivity meter; interpret for agricultural suitability and salinity class |
| 2 | Determination of Organic Carbon in Soil (Walkley-Black Method) | Determine organic carbon content in soil samples by wet oxidation using K2Cr2O7; titrate with ferrous ammonium sulphate (FAS); calculate % organic carbon and soil organic matter |
| 3 | Estimation of Available Nitrogen | Estimate available nitrogen in soil by alkaline potassium permanganate in Soil (Alkaline KMnO4 Method) distillation method; titrate with standard H2SO4; calculate available N content; relate to nitrogen fertiliser recommendation |
| 4 | Determination of Total Hardness of Irrigation Water | Determine total hardness (calcium and magnesium) of irrigation water by EDTA complexometric titration; relate to scaling in drip/sprinkler systems and soil sodicity |
| 5 | Determination of Chloride in Water (Mohr's Method) | Estimate chloride content in irrigation water by argentometric titration; assess water quality for irrigating salt-sensitive crops; relate to Sodium Adsorption Ratio (SAR) |
| 6 | Determination of COD and BOD of Agro-processing Wastewater | Determine COD of agro-industry wastewater (dairy/food processing effluent) by dichromate method; estimate BOD; relate to environmental impact and effluent treatment requirements |
| 7 | Identification of Fertilisers by Chemical Tests | Identify given fertiliser samples (urea, ammonium sulphate, DAP, SSP, KCl) by systematic chemical tests (flame test, NH3 evolution, SO4²⁻ test, PO4³⁻ test); relate to fertiliser chemistry and nutrient content |
| 8 | Estimation of Nitrogen in Fertiliser (Kjeldahl Method) | Determine nitrogen content of a fertiliser sample (urea or ammonium sulphate) by Kjeldahl digestion and distillation; titrate distillate; calculate % N; relate to fertiliser grade and quality certification |
| 9 | Estimation of Crude Fat in Food Sample (Soxhlet Method) | Determine crude fat content in oilseeds or food samples (groundnut, soybean) by Soxhlet extraction using petroleum ether; calculate % fat. |
| 10 | Detection of Food Adulterants | To identify common adulterants in milk, turmeric, and edible oils. |
| 11 | Compost Quality Analysis – pH, C:N Ratio | Determine pH, electrical conductivity, and C:N ratio of compost and vermicompost samples; assess maturity and quality; relate to green fertiliser chemistry and soil health |
| 12 | Green Synthesis of Biopesticide / Neem Extract Characterisation | Prepare aqueous neem leaf extract; determine pH, specific gravity, and azadirachtin qualitative test; compare with commercial formulation; relate to biopesticide chemistry and sustainable agriculture |
Equipment / Chemicals Required
- pH meter and conductivity meter
- Analytical balance and drying oven
- Burette, pipette, standard EDTA, KMnO4, FAS, AgNO3 solutions
- Kjeldahl distillation and digestion apparatus
- Soxhlet extraction apparatus
- UV-Vis spectrophotometer
- COD apparatus (reflux condenser, digestion flask)
- Flame photometer (for K, Na estimation — optional)
- Hotplate, magnetic stirrer
- Separating funnel and distillation setup
Teaching-Learning Methodology
Each laboratory session begins with a 10-minute pre-lab discussion connecting the experiment to the corresponding theory unit. Students record aim, principle, apparatus, chemicals, procedure, observation table, calculations, result, and inference in the laboratory record book. Post-lab discussion relates experimental findings to real-world engineering applications in the respective stream. Students maintain a laboratory record book assessed for viva, record, and day-to-day performance.
Course Outcomes
| COs | Course Outcome Statement | KL |
|---|---|---|
| CO1 | Determine soil pH, organic carbon, and available nitrogen by standard analytical methods | K3 |
| CO2 | Analyse irrigation water quality for hardness, chloride, COD, and BOD | K3 |
| CO3 | Identify fertilisers by chemical tests and estimate nitrogen content by Kjeldahl method | K3 |
| CO4 | Determine fat and carbohydrate content of agro-products by extraction and colorimetric methods | K3 |
| CO5 | Evaluate compost quality and characterise green biopesticide preparations | K3 |
Evaluation Pattern
| Sr. | Component | Marks | Weightage |
| 1. | Day-to-day performance (Observation, Procedure, Conduct) | 20 | 20% |
| 2. | Laboratory Record / File | 30 | 30% |
| 3. | End Semester Practical Examination (Experiment + Viva Voce) | 50 | 50% |
Text Books
- Engineering Chemistry – Jain and Jain
- Soil Chemistry – Bohn, McNeal, and O'Connor
- Food Chemistry – Fennema (Ed.) Safety and General Instructions
- Students must wear lab coat and safety goggles at all times in the chemistry laboratory
- Handle all acids, alkalis, and oxidising agents with extreme care; use fume hood for volatile chemicals
- Dispose of chemical waste in designated containers as per lab safety guidelines
- Do not pipette by mouth; use rubber bulb or mechanical pipette fillers
- Wash hands thoroughly after every experiment; report any spillage or accident immediately
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