NIOS Class 12 Environment Science 333 Solved Practical File (Lab Manual)
The NIOS Class 12 Environment Science 333 Practical file solved from Unnati Education includes:
NIOS Environment Science 333 Solved Practical File (Lab Manual) is a crucial factor in your final result. Students often underestimate the importance of practical marks, only to discover later that they are what determine whether or not they qualify. Environmental Science practicals do not only involve performing experiments, but also understanding the human interaction with nature and putting that knowledge into practice.
Unnati Education provides the updated 2025 and 100% syllabus-based practical file to simplify this. The file is designed for Hindi and English-medium students. It follows NIOS guidelines to the letter. Each experiment, observation, and conclusion is neatly handwritten or typed in NIOS-approved format. This is not just a submission file -- it's an educational resource that will help you better understand environmental analysis, fieldwork, and surveys.
Table of Contents
| S. No. | Name of the Practical / Exercise | Page No. |
|---|---|---|
| 1 | Introduction | 1 |
| 2 Field Study | ||
| Exercise - 1: Study of a simple ecosystem (Suggested habitats: pond, river, estuarine, grassland, forest, and desert) and description of the biotic and abiotic components of the ecosystem. | 5 | |
| Exercise - 2: Study of effects of human interaction with the natural environment. | 8 | |
| Exercise - 3: Survey of vegetation, birds, insects, and other animals in an area. | 11 | |
| Exercise - 4: Choose five common species of Trees/plants from your neighborhood and list their common names. Describe each plant in terms of its height and leaves. | 15 | |
| Exercise - 5: Describe the environmental problem of your locality and suggest a remedy. | 20 | |
| Exercise - 6: Identifying the sources of pollution in water obtained from different sources. | 23 | |
| Exercise - 7: To segregate domestic waste into biodegradable and non-biodegradable components. | 25 | |
| 3 Lab Exercise | ||
| Exercise - 8: To study the quality of a sample of water collected or provided. | 28 | |
| Exercise - 9: To determine the texture of various soil samples. | 34 | |
| Exercise - 10: To estimate the amount of dust (particulate matter) deposition on the leaves of roadside plants. | 38 | |
| Exercise - 11: To study the effect of light intensity on the growth of plants. | 42 | |
| 4 Creative Exercise | ||
| Exercise - 12: To set up an aquarium. | 45 | |
| Exercise - 13: To study the biodiversity of birds and insects in your locality. | 52 | |
| Exercise - 14: To prepare a list of plants and animals used for making meals at home on any one day, and to comment on the habits and habitat of each. | 56 | |
| Exercise - 15: To make a herbarium sheet. | 59 | |
| Exercise - 16: To describe: a) the climate of an urban area; b) yearly variation in suspended particulate matter in the same area. | 62 | |
| Exercise - 17: To make an audit of the electrical energy consumption by various household appliances. | 66 | |
| Appendix I – Curriculum of Practical | ||
Download Solved Practical File
Why is the NIOS Environment Science 333 Solved practical file so important?
Environmental Science is a subject that combines theory and reality. Your practical file demonstrates your ability to use classroom knowledge in real-life situations.
Many students leave it until the last minute or create incomplete files, missing key observations and data tables. It's important to use the NIOS Environmental Science Practical File Class 12 because it will save you time, eliminate errors, and ensure that your work is presented according to board standards.
This file will not only help you achieve high scores, but it also helps to teach the basics of environmental awareness - understanding ecosystem balance, sustainable development, and waste management.
The Latest NIOS Environment Science Lab manual 2025
Our NIOS class 12 Environment Science 333 solved practical file (Lab manual) includes all experiments according to the NIOS syllabus. The correct materials, procedures, observations, and conclusions are written for each practical in a structured and clean manner.
1. Field Studies and Observations
Learn how to analyse your environment scientifically.
Find detailed solutions to:
- Study of an ecosystem that is simple (pond, river, or forest).
- Identifying living (biotic) and non-living (abiotic) components.
- Observing the interaction of humans with their environment.
- Plants, trees, insects, and birds in the local area.
- List and describe the common plants that you find in your area.
The field-based practicals include clearly written observations (if needed), photographs (if necessary), and proper presentations for NIOS submission.
2. Environmental Problem Studies
This section is dedicated to analyzing environmental challenges in real life.
- Examining the sources of pollution in local water bodies.
- Sorting waste into biodegradable or non-biodegradable parts.
- Suggestions for solutions to environmental problems in your area
Students are taught how to use scientific reasoning in local situations, improving their analytical and observational skills.
3. Experiments in the Laboratory
These experiments are centered on testing and analysis.
- Checking the water quality parameters: colour, odour, pH, hardness, dissolved oxygen.
- Determine soil texture and fertility.
- Measure dust on leaves along the roadside.
- The effect of light intensity and plant growth.
The lab activities include accurate readings, the expected results, and a conclusion that shows understanding. This is exactly what examiners are looking for.
4. Exercises that are both Creative and Practical
This part of the manual includes:
- How to set up an aquarium.
- Consider studying the biodiversity of birds and insects around you.
- Prepare a herbarium with the correct labelling.
- How to audit your energy consumption at home
- Describe the climate in an urban area.
These activities will help you to demonstrate your initiative and connect theory with real-life situations.
This practical file has a purpose and educational value
The NIOS Class 12 Environment Science practical file has been designed to promote awareness and foster practical understanding. Students will learn about how natural processes function, how humans affect them, and what environmental protection solutions are available.
The document encourages:
- Observation-based learning.
- Data collection in real-world situations
- Presentation of findings in a logical manner.
- Sustainability and environmental sensitivity are key to a sustainable future.
Environmental Science is a practical subject and requires observation and action. This lab manual will help you gain insight and marks.
This Practical File with Solved Problems Can Help You
- Savings time
Manually preparing practicals can take several weeks. You can focus on revision instead of writing by using our solved files. - It is Accurate
The NIOS format is followed with accuracy in the readings and conclusions. No marks will be lost for missing sections or incorrect presentations. - Reduces Exam Stress
This will reduce nervousness during the viva or evaluation. It reduces anxiety during the viva, or assessment. - Supports all Streams
This file is compatible with all categories, including those who are taking Streams 1, 2, 3, or 4. It also includes the requirements for on-demand exams. - Helps with Viva and Record Maintenance
The manual contains Viva-style questions and answers for each exercise. This will prepare you for the oral examination by the examiner.
Why Choose Unnati Education
Unnati Education has helped thousands of students in India and abroad achieve excellent NIOS Results. We have over 10 years of experience in academic support and ensure that each file is clear for the students.
What makes us unique?
- All files are 100% based on the syllabus and free of errors.
- Updated for session, October 2025.
- Both handwritten and typed formats are available.
- The files are available in both Hindi and English.
- Delivery is fast via WhatsApp and courier
- Prices that are affordable and 24/7 assistance.
- Students who are weak or reappearing can receive individualized support.
We assist students from Delhi and Mumbai, UP and Bihar, Rajasthan and Jharkhand, as well as Nepal, the UAE, and Delhi and Mumbai.
Who can benefit from the Solved File?
This NIOS Environmental Science Practical File 333 (Lab Manual) is ideal for:
- Students of NIOS who are regular (Stream 1)
- Students appearing to re-exam (Stream 2) or the compartment.
- Learners on Demand (Streams 3 and 4)
- Distance learning students studying abroad.
- Professionals who balance work and study.
- Students who have difficulty composing or writing practicals.
This file will ensure that you submit a complete and professional submission, even if you haven't completed your practicals at school or don't have the resources.
Unnati Education Supporting Unnati Education
We offer more than just solved practical files. We provide a complete NIOS system. We offer the NIOS Environment Science 333 Solution Practical File (Lab manual) along with:
- All subjects have solved assignments (TMAs).
- Admission assistance for Streams 1 to 4.
- Answers to past papers and question banks.
- IGNOU Projects and Synopsis.
- Online coaching for Accounting, Economics, Science, and Humanities.
Each service is designed for your NIOS experience to be stress-free and enjoyable.
Exam preparation tips for Environmental Science practicals
- Read Theory: Understand the topic before writing an experiment the topic. It helps during the viva.
- Be Careful: Do not limit yourself to textbook definitions, but rather focus on real field observations.
- Label Diagrams Correctly: Maintain neatness with pencils and rulers.
- Review Viva questions: Revisit basic concepts such as pollution types, ecosystem components, and sustainable developments.
- Keep neatness: Clear handwriting and clean pages are important to examiners.
- Use Real Example: Mention local plants or water sources whenever possible. This shows originality.
The small changes you make can have a huge impact on your final grade.
Practicals to Promote Environmental Awareness
This subject is designed to make you more environmentally aware. These practicals help students:
- Ecological balance is important.
- Understanding the impact of humans on nature.
- Appreciation of biodiversity
- Sustainable living habits
- Conservation is a responsibility.
You will not only be able to complete your coursework efficiently, but you will also learn about the environment.
How to order the solved practical file
It takes only a few moments to place an order.
- Send us a WhatsApp message: +91 9999 436384
- Mention your subject: Environmental Science 333
- Select medium: Hindi or English
- Select format: PDF or print file (courier delivery).
- Confirmation of payment: via Paytm or UPI
- Instantly receive: Delivered digital files within hours, printed copies in 1-2 days.
For any questions or concerns, you can also contact us via WhatsApp.
Why students trust Unnati Education
10+ years of success with NIOS Support.
Our files have helped thousands of students achieve high grades.
Experts in the field have reviewed and authenticated all content.
Delivery across India and overseas is fast and secure.
WhatsApp offers round-the-clock support.
We want to make NIOS simple, organized, and stress-free for all students.
Final Thoughts
Do not risk losing marks due to an incomplete or poorly formatted practical file. Unnati Education's NIOS class 12 Environment Science 333 solved practical file (Lab manual) ensures that you submit a complete and NIOS-approved document.
Each exercise is intended to help you learn, not simply memorize. You'll be confident when you submit your file or during the viva.
This lab manual will help you finish your work more quickly and accurately, whether you are in Delhi, Dubai, Jaipur, or Jeddah. Unnati Education is helping thousands of students to succeed. Now it's time for you.
For instant help or to order now, message us on WhatsApp: 9899 436384 or email: info@unnatieducation.in
FAQs – NIOS Environment Science 333 Solved Practical File (Lab manual)
Q1. Is the file updated as per the latest NIOS October 2025 syllabus?
The file has been updated to the October 2025 syllabus, and the evaluation format, as well as the experiment list, is in line with the latest NIOS academic sessions.
Q2. Can I get the file in both Hindi and English medium?
You can choose between Hindi and English. Before ordering, you can select your preferred language. Both formats are NIOS-compliant.
Q3. Are there Viva-style questions?
Yes, you will find Viva Style questions and answers after each experiment. This will help you to prepare.
Q4. Can this file be used for Stream 2 and On-Demand exams?
This file can be used to take exams for Stream 2 or On-Demand. This file is valid for all students -- 1, 2, 3, and 4, including those who reappear or on demand.
Q5. How soon will I receive the file after payment?
Print copies are sent within 24 hours.
Q6. What makes Unnati Education's file different from others?
Unnati Education files are accepted by all NIOS centers in India and abroad. They are accurate, free of plagiarism, handwritten, or printed, with verified experiments.