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Solved Assignment Nios Science (212) - English Medium
Solved Assignment Nios Science (212) - English Medium

Nios Solved Assignment Science & Technology (212) English Medium 2026-27

NIOS Class 10 Accountancy 224 Solved Assignment 2026-27 NIOS Class 10 Accountancy 224 Solved Assignment 2026-27 in English
NIOS Class 10 Science and Technology 212 Solved Assignment NIOS Class 10 Science and Technology 212 Solved Assignment Hindi Medium 2026-27
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Nios Solved Assignment Science & Technology (212) English Medium 2026-27

Download the 100% accurate NIOS Class 10 Science and Technology (212) Solved Assignment for the 2026 session. Get the latest NIOS TMA solutions in PDF format, featuring fully solved answers and complete project work designed by experts to help you secure maximum marks. Buy the ready-to-copy PDF now! Download the latest TMA solutions in PDF format and score top grades in your Class 10th board exams! Contact us at +91-9582489391 to get your copy.

NIOS TMA carries 20% weightage of Maximum Theory marks for each Academic subject. NIOS TMA marks are proportionately reflected in the marksheet based on the formula (20% weightage of Maximum Theory marks).

Science & Technology (212)
शिक्षक अंकित मूल्यांकन पत्र
Tutor Marked Assignment 2026-27
Max. Marks: 20
Note:
    1. All questions are compulsory. The marks allotted for each question are indicated against each question.
    2. Write your name enrolment number, AI name, and subject on the top of the first page of the answer sheet.

1. Answer any one of the following questions in about 40-60 words. (Marks: 2)
(A) Meena is planning to visit her village located 120 km away. She has two options:
    • Bus A travels at a constant speed of 40 km/h
    • Bus B travels at varying speeds (sometimes fast, sometimes slow)

(i) Which bus represents uniform motion and why?
(ii) Calculate time taken by Bus A to reach the destination.
(iii) Why might Bus B take more or less time despite higher speeds at times?
(iv) Suggest & Justify the bus that is more reliable for reaching her Village.
(B) A postman is travelling along a straight road to deliver parcels. His movement is recorded over time, and the position–time graph obtained is a straight line.
(i) What type of motion is represented by this graph? Explain your answer.
(ii) What does the slope of the position–time graph tell us about his journey?
(iii) If, on another day, the graph appears curved instead of a straight line, what does it indicate about his motion?
2. Answer any one of the following questions in about 40-60 words. (Marks: 2)
(A) A student filled a steel glass with cold water and kept it outside on a humid day. After some time, tiny droplets appeared on the outer surface of the glass.
Explain why these droplets are formed. Name the process involved and relate it to cloud formation in nature.
(B) A farmer burns crop residue after harvesting wheat. His son complains of irritation in the eyes and difficulty in breathing.
Which type of air pollutants may be produced due to burning of crop residue? Explain one harmful effect of particulate matter on human health.
3. Answer any one of the following questions in about 40-60 words. (Marks: 2)
(A) In a village, farmers grow wheat after harvesting peas in the same field. Explain which agricultural method is being used and how does it help in maintaining soil fertility. (See Lesson – 31)
(B) In many Indian homes, footwear is removed before entering the house and drinking water is stored in covered containers. Explain how these traditional practices help in maintaining hygiene and preventing diseases.
4. Answer anyone of the following questions in 100-150 words. (Marks: 4)
(A) A packet of chips is filled with nitrogen gas before sealing. The manufacturer claims this increases shelf life.
Answer the following Questions:
(i) What chemical process is responsible for spoilage of oils and fats?
(ii) Why is nitrogen gas used instead of air inside the packet?
(iii) Classify the spoilage reaction as oxidation or reduction.
(iv) Suggest two other methods to prevent this process in daily life.
(B) Water samples are collected from a river, a well, and rainwater. After purification, all samples are decomposed into hydrogen and oxygen.
In each case, it is found that:
9 g of water produces 1 g hydrogen and 8 g oxygen
Questions:
(i) Which law is verified by this observation?
(ii) Why does the source of water not affect its composition after purification?
(iii) If 36 g of water is decomposed, predict the masses of hydrogen and oxygen formed.
(iv) How does this observation support Dalton’s atomic theory? (1×4) (See Lesson–3)
5. Answer anyone of the following questions in 100-150 words. (Marks: 4)
(A) In traditional Indian grain storage practices, dried neem leaves are often kept with grains to protect them from insects and fungal growth. Using your knowledge of classification and biodiversity, answer the following questions:
(i) Name the kingdoms to which insects and fungi belong.
(ii) Write one distinguishing feature of each kingdom.
(iii) Explain how this traditional practice helps in biodiversity conservation and safe food storage.
(iv) Mention one other example from your surroundings where plants are used naturally to protect stored items or health. (1×4) (See Lesson–19)
(B) (i) Darwin observed that organisms showing useful variations are better able to survive in nature. Explain the meaning of “survival of the fittest” with reference to any one example given in the lesson. (See Lesson-20)
(ii) During summer, raw mangoes gradually change colour from green to yellow as they ripen. Name the plastids responsible for green colour and yellow colour in mangoes. State one function of each plastid.
6. Prepare any one project as given below. (Marks: 6)
(A) In kitchens, while cooking chapati on a tawa, you may notice:
    • The handle of the tawa becomes hot
    • The air above the flame feels hot
    • You feel warmth even at some distance from the flame

Answer the following:
(i) Identify and explain the three modes of heat transfer involved in the above situation. 2
(ii) Design and describe a simple home activity to demonstrate convection currents in liquids using easily available materials.
  • Materials
  • Steps
  • Observation
(iii) Why are handles of cooking utensils often made of plastic or wood? Explain using the concept of heat transfer. 
(B) In our daily life, we use energy for activities like cooking, lighting, and using electrical appliances. Sometimes, energy is wasted due to careless use. Since many energy sources are limited, it is important to use them wisely. Traditional Indian practices also encourage careful and minimal use of resources.
Based on this idea, carry out the following small project at home:
    1. List any four daily activities in your home where energy is used.
    2. Identify two instances of energy wastage in your household or in the surroundings.
    3. Suggest two simple measures to reduce this wastage.
    4. Prepare a One-Day Energy-Saving Plan for your household as follows:

    • Divide your day into any three time periods (morning, afternoon, evening/night).
    • For each period, mention one common activity and one energy-saving action related to it.
    • Present your answer in a simple table format.

  1. Write one way in which traditional Indian practices help in saving energy.
    “The End”

    📌 Most Important Facts Relating to TMA (2026-27)

    • Based on the Latest Session (2026-27): This assignment solution is strictly based on the newest syllabus for 2026-27. It is exclusively for students enrolled in Stream-1 & Block-1&2 for the April/October 2027 examination.
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