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Important Questions: CBSE Class 6 Science Chapter 11 Nature's Treasures

CBSE Class 6 Science Chapter 11 Nature's Treasures introduces students to the fundamental concept of natural resources and their sustainable use. This chapter builds environmental awareness by exploring water, air, soil, and minerals, distinguishing between renewable and non-renewable resources, and highlighting conservation strategies. The question bank below mirrors the CBSE exam pattern, helping students practise the exact styles of questions that appear in term exams.

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Key takeaways

✓Chapter 11 typically carries 5-8 marks in the Class 6 CBSE Science term exam, with a mix of MCQs, short-answer, and case-based questions.
✓Questions focus heavily on distinguishing renewable from non-renewable resources, with examples from daily life.
✓Conservation of water, air, and soil is tested through 2-3 mark application-based questions in most CBSE papers.
✓Pollution sources and effects appear regularly in 3-5 mark questions, often with diagrams or case studies.
✓CBSE examiners favour questions that ask students to suggest practical conservation measures at home or school.
✓Understanding the NCERT terminology — natural resources, renewable, non-renewable — is critical for scoring full marks.

Chapter Overview and Marks Weightage in CBSE Exam

Nature's Treasures forms a foundation of the environmental science strand in the Class 6 CBSE Science syllabus. In most CBSE term-2 or annual exams, this chapter contributes 5-8 marks across multiple question formats. Typically, you will see 2-3 multiple-choice questions (1 mark each), one or two short-answer questions (2-3 marks), and a long-answer or case-based question (5 marks). Questions test conceptual clarity (definitions of renewable versus non-renewable), application (identifying resources in given scenarios), and higher-order thinking (suggesting conservation methods). The 2024-25 syllabus retains all four core topics — natural resources, renewable vs non-renewable classification, conservation of resources, and pollution sources — so students must prepare each topic with equal care.

MCQs (1 mark each): 2-3 questions on resource types, pollution sources, or conservation methods.
Short Answer (2-3 marks): 1-2 questions asking for examples, differences, or brief explanations of conservation.
Long Answer / Case-based (5 marks): 1 question requiring detailed reasoning, multiple examples, or a diagram.
Internal choice often appears in 3-mark or 5-mark questions, allowing students to skip one sub-part.

1-Mark Questions: MCQ and Very Short Answer

One-mark questions in CBSE Class 6 Science Chapter 11 test recall and basic comprehension. They appear as multiple-choice questions or one-word/one-sentence answers. Expect questions on definitions, classifications, and simple examples. Practise these to secure quick, easy marks and build confidence before tackling longer questions. The answers below follow the NCERT Class 6 Science terminology exactly, ensuring alignment with the marking scheme used by CBSE examiners during answer-script evaluation.

Q1. Which of the following is a renewable resource? (a) Coal (b) Petroleum (c) Sunlight (d) Natural gas — Answer: (c) Sunlight. Sunlight is continuously available and does not get exhausted.
Q2. Name one non-renewable natural resource. — Answer: Coal (or petroleum, natural gas, minerals).
Q3. Air is an example of a ______ resource. (Fill in the blank) — Answer: renewable (or natural).
Q4. True or False: Soil is a non-renewable resource. — Answer: False. Soil is renewable, though it takes a long time to form; if used unsustainably, it can become degraded.
Q5. Which gas is most abundant in air? (a) Oxygen (b) Nitrogen (c) Carbon dioxide (d) Hydrogen — Answer: (b) Nitrogen (about 78 per cent).

2-Mark Questions with Model Answers

Two-mark questions demand short explanations, two examples, or a simple comparison. CBSE examiners allocate 1 mark for each key point or example. Structure your answer in two clear sentences or two bullet points. Avoid writing long paragraphs; clarity and completeness score marks. Use NCERT terminology — 'natural resources', 'renewable', 'non-renewable', 'conservation' — to align with the scheme. The examples below reflect the level and phrasing of questions from recent CBSE Class 6 Science term papers, helping students practise under exam-like conditions.

Q1. Differentiate between renewable and non-renewable resources. Give one example of each. — Answer: Renewable resources can be replenished naturally (e.g. water, sunlight). Non-renewable resources are present in limited quantities and cannot be replaced once exhausted (e.g. coal, petroleum).
Q2. Why is conservation of resources important? — Answer: Conservation ensures resources remain available for future generations. It prevents wastage, reduces pollution, and maintains ecological balance.
Q3. List two ways to conserve water at home. — Answer: (i) Turn off taps while brushing teeth. (ii) Repair leaking pipes immediately.
Q4. Name two sources of air pollution. — Answer: (i) Smoke from vehicles. (ii) Industrial emissions.
Q5. What are natural resources? Give two examples. — Answer: Natural resources are materials obtained from nature that are useful to humans. Examples: water, air, soil, minerals.

3-Mark Questions with Model Answers

Three-mark questions require more detailed explanations, three distinct points, or a combination of definition plus examples. CBSE marking schemes typically award 1 mark per valid point or well-explained step. Students should write in short paragraphs or numbered points for clarity. Questions often ask 'Explain', 'Describe', or 'Why', testing both recall and understanding. Use the NCERT Class 6 Science textbook examples — references to air, water, soil, minerals — to ground your answers. Practising these questions improves time management, as students learn to write just enough to secure full marks without wasting precious minutes.

Q1. Explain three ways to conserve air quality in your city. — Answer: (i) Use public transport or carpool to reduce vehicle emissions. (ii) Plant more trees, which absorb carbon dioxide and release oxygen. (iii) Avoid burning waste or leaves, which releases harmful smoke.
Q2. Describe how water is a renewable resource. What human activities can make it non-renewable in practice? — Answer: Water is renewed through the water cycle (evaporation, condensation, precipitation). However, over-extraction of groundwater, pollution of rivers, and wastage can deplete clean water faster than it is replenished, effectively making it scarce or non-renewable in certain regions.
Q3. List three harmful effects of soil pollution. — Answer: (i) Reduces soil fertility, harming crop growth. (ii) Contaminates food grown in polluted soil, affecting human health. (iii) Disrupts ecosystems by killing beneficial soil organisms.
Q4. Why are minerals considered non-renewable resources? Give two examples. — Answer: Minerals form over millions of years through geological processes. Once extracted and used, they cannot be replaced within a human timescale. Examples: iron ore, copper.
Q5. What steps can your school take to conserve natural resources? — Answer: (i) Install rainwater harvesting systems to recharge groundwater. (ii) Use dustbins to reduce soil and water pollution. (iii) Organise tree-planting drives to improve air quality.

5-Mark Questions and Case-Based Questions

Five-mark questions are the longest and most challenging in CBSE Class 6 Science exams. They often come as case studies, requiring students to read a short paragraph and answer sub-questions, or as open-ended questions demanding detailed explanations with diagrams, examples, and reasoning. Examiners look for structured answers: introduction, multiple points with elaboration, and a concluding statement. Allocate about 7-8 minutes per 5-mark question. Use headings or bullet points to organise your response. Diagrams, when asked, carry 1-2 marks; label them neatly. The examples below mirror recent CBSE patterns, including scenario-based and application-driven questions that test higher-order thinking.

How CBSE Frames Questions from This Chapter

CBSE question-paper setters follow a predictable pattern when designing questions for Class 6 Science Chapter 11. Understanding this pattern helps students anticipate question types and prepare strategically. First, expect direct recall questions (1 mark) asking for definitions, examples, or classifications straight from NCERT. Second, application-based questions (2-3 marks) test whether students can apply concepts to real-life scenarios — 'Suggest ways to reduce plastic waste at home' or 'Why is rainwater harvesting important in your region?' Third, higher-order thinking questions (5 marks) present case studies or ask students to compare, analyse, or design solutions. CBSE also loves asking students to draw and label diagrams (sources of pollution, the water cycle), so practise sketching neatly. Internal assessments and practicals sometimes include projects on resource conservation, which then inspire exam questions. Finally, interdisciplinary links appear: a question might connect soil conservation to agriculture or air pollution to health, testing integrated understanding.

Recall-based: 'Define renewable resource' or 'Name two minerals' — 1 mark each.
Application: 'List three ways your family can save electricity' — 2-3 marks.
Analysis: 'Compare the impact of using coal versus solar energy' — 3-5 marks.
Case study: Short paragraph followed by sub-questions — 5 marks total.
Diagram-based: 'Draw and label sources of water pollution' — 2 marks for diagram + 2 marks for explanation.
Value-based: 'Why should we conserve resources for future generations?' — tests ethics and reasoning.

Common Mistakes Students Make and How to Avoid Them

Even well-prepared students lose marks on Chapter 11 questions due to avoidable errors. The most frequent mistake is confusing renewable and non-renewable resources. For instance, writing 'soil is non-renewable because it takes time to form' misses the NCERT definition: soil is renewable, but unsustainable use can degrade it. Always stick to NCERT terminology. Second, students give vague answers: 'We should save water' scores zero; 'Turn off taps when not in use, fix leaks, and use a bucket instead of a shower' scores full marks. Be specific. Third, in case-based questions, students answer only one sub-question and skip others, losing easy marks. Read all sub-parts carefully and budget time for each. Fourth, diagrams are often unlabelled or messy. Use a pencil, ruler, and clear labels; neatness fetches marks. Fifth, students write long paragraphs when bullet points would be clearer and faster. CBSE marking schemes reward clarity and completeness, not essay-length answers. Sixth, spelling errors in keywords — writing 'renuyable' or 'polution' — can cost a mark if the examiner cannot decipher the term. Finally, time mismanagement: spending ten minutes on a 2-mark question leaves no time for the 5-marker. Practise with a timer to build speed and accuracy.

Mistake 1: Calling soil or water non-renewable. Solution: Revise NCERT definitions; soil and water are renewable but require sustainable use.
Mistake 2: Vague conservation methods. Solution: Provide concrete, actionable steps (e.g. 'rainwater harvesting' not just 'save water').
Mistake 3: Skipping sub-questions in case studies. Solution: Read the entire question, underline sub-parts, and answer each in order.
Mistake 4: Unlabelled or illegible diagrams. Solution: Use a pencil, draw neatly, and label every part clearly.
Mistake 5: Writing paragraphs instead of points. Solution: Use bullet points or numbered sentences for 2-3 mark answers.
Mistake 6: Spelling errors in key terms. Solution: Memorise correct spellings of 'renewable', 'pollution', 'conservation', 'minerals'.
Mistake 7: Poor time management. Solution: Allocate 1 minute per mark (2-mark question = 2 minutes) and stick to it during practice.

Additional Practice Questions (Mixed Marks)

This section offers a rapid-fire set of mixed-marks questions to simulate the variety students encounter in actual CBSE papers. Practising a blend of MCQs, short answers, and long answers in one sitting builds exam stamina and sharpens time management. Students should attempt these under timed conditions — set a timer for 20 minutes and try to answer all questions below. Then check the model answers, noting where marks were lost due to incomplete explanations or missed keywords. Regular timed practice transforms conceptual knowledge into exam-ready performance, the difference between a good score and a top score in Class 6 Science.

Q1 (1 mark): Which of the following is a non-renewable resource? (a) Wind (b) Forests (c) Coal (d) Water — Answer: (c) Coal.
Q2 (2 marks): Why is it important to reduce the use of plastic? — Answer: Plastic is non-biodegradable and pollutes soil and water. Reducing plastic use prevents environmental harm and conserves petroleum (the raw material for plastic).
Q3 (3 marks): Suggest three ways to conserve soil in agricultural areas. — Answer: (i) Practice crop rotation to maintain soil nutrients. (ii) Plant trees along field boundaries to prevent erosion. (iii) Avoid excessive use of chemical fertilisers, which degrade soil quality.
Q4 (1 mark): Name one pollutant released by vehicle exhaust. — Answer: Carbon monoxide (or nitrogen oxides, particulate matter).
Q5 (2 marks): What is the difference between natural and human-made resources? — Answer: Natural resources come directly from nature (e.g. water, minerals). Human-made resources are created by processing natural materials (e.g. plastic, cement).

Revision Tips and Study Plan for This Chapter

Effective revision for CBSE Class 6 Science Chapter 11 requires a blend of concept clarity, question practice, and self-assessment. Start by reading the NCERT textbook chapter thoroughly, highlighting definitions and examples. Make a one-page summary sheet listing all natural resources, their classifications (renewable/non-renewable), and conservation methods. Use mind maps or flowcharts to visualise the chapter structure — this aids memory. Next, solve all in-text and end-of-chapter NCERT questions; these form the foundation for most CBSE exam questions. Then move to additional question banks like this one, attempting questions by marks weightage. Time yourself: 1-mark questions should take under a minute, 5-mark questions about seven minutes. After solving, check model answers and identify gaps. For topics you find difficult — say, distinguishing renewable from non-renewable — revisit the NCERT definitions and create flashcards. Use mnemonic devices: 'SUN' for renewable (Sunlight, Unlimited water cycle, Natural forests) and 'MANGO' for non-renewable (Minerals, And petroleum/Natural Gas/cOal). A week before the exam, take a full-length mock test covering the entire syllabus, then review mistakes. Finally, teach a friend or family member one concept from the chapter; teaching reinforces understanding. Consistent daily practice — even 15 minutes — outperforms last-minute cramming.

Day 1-2: Read NCERT Chapter 11, make notes on renewable vs non-renewable, conservation, pollution.
Day 3: Solve all NCERT in-text and end-of-chapter questions; verify answers with the textbook.
Day 4-5: Attempt 1-mark and 2-mark questions from this page; focus on speed and accuracy.
Day 6: Tackle 3-mark and 5-mark questions; practise writing neat, structured answers.
Day 7: Draw and label diagrams (pollution sources, resource classification chart); time yourself.
Day 8: Full-chapter mock test (mix of all question types) under exam conditions; review mistakes.
Day 9: Revise flashcards and summary sheet; clarify doubts with a teacher or peer.
Day 10 (exam eve): Light revision — read summary, solve 2-3 favourite questions for confidence; sleep well.

How CBSETUTOR.ai Helps Master Nature's Treasures

Many Class 6 students struggle to retain the definitions, classifications, and examples in Chapter 11, especially when juggling multiple subjects. CBSETUTOR.ai offers a 24×7 AI tutor that makes mastering Nature's Treasures simple and stress-free. Students can snap a photo of any question — whether from NCERT, school worksheets, or this page — and receive a step-by-step explanation in seconds. The AI tutor breaks down the differences between renewable and non-renewable resources using real-life examples from Indian contexts: 'Coal powers many thermal plants in India, but once used, it cannot be replaced — that is why it is non-renewable.' For conservation methods, the platform suggests region-specific practices: rainwater harvesting in Chennai, rooftop solar in Rajasthan. The AI also generates unlimited practice questions at each marks level, so students can drill 2-mark or 5-mark questions until perfect. Parents love the flat ₹999/month pricing covering all subjects for Classes 6-12, with no hidden fees. A 3-day free trial lets families test the platform risk-free. Students in Delhi NCR, Bangalore, Mumbai, and smaller towns alike use CBSETUTOR.ai to clarify doubts instantly without waiting for the next tuition class, building confidence and saving time.

Photo upload: Snap any Chapter 11 question and get detailed, NCERT-aligned answers instantly.
Concept videos: Watch short animated clips explaining renewable vs non-renewable, pollution sources, and conservation.
Unlimited practice: Generate fresh MCQs, short-answer, and case-based questions at any marks level.
Doubt resolution: Ask follow-up questions in natural language; the AI tutor responds 24×7, even at 11 PM before an exam.
Region-specific examples: Learn conservation methods relevant to your city or state, making concepts relatable.
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Frequently asked questions

How many marks does Chapter 11 Nature's Treasures carry in the CBSE Class 6 Science exam?+

Typically, this chapter contributes 5-8 marks in the term-2 or annual exam. You will see 2-3 MCQs (1 mark each), one or two short-answer questions (2-3 marks), and often one long-answer or case-based question (5 marks). Weightage can vary slightly by school, but it remains a scoring chapter if you practise well.

What is the difference between renewable and non-renewable resources?+

Renewable resources can be replenished naturally over a short time (e.g. sunlight, water, forests). Non-renewable resources exist in limited quantities and cannot be replaced once used (e.g. coal, petroleum, minerals). This distinction is tested in almost every CBSE Class 6 Science Chapter 11 exam paper, so memorise it with examples.

Is soil a renewable or non-renewable resource?+

Soil is a renewable resource because natural processes like weathering and decomposition continuously create it. However, it takes many years to form, and over-exploitation or erosion can degrade it faster than it regenerates, so sustainable use is essential. NCERT treats soil as renewable, and CBSE marking schemes follow that definition.

Which topics from Chapter 11 are most important for the exam?+

Focus on four core areas: (i) definitions and examples of natural resources, (ii) classification into renewable and non-renewable, (iii) methods of conservation (water, air, soil), and (iv) sources and effects of pollution. Case-based questions often combine conservation and pollution, so prepare integrated answers.

How should I prepare diagrams for this chapter?+

Practise drawing and labelling sources of air pollution (factories, vehicles, burning waste) and water pollution (sewage, industrial effluents). Use a pencil and ruler for neatness. Label each part clearly. Diagrams can carry 1-2 marks, and well-drawn, labelled figures impress examiners and secure full marks even if your written explanation is brief.

What are common mistakes to avoid in Nature's Treasures questions?+

Avoid vague answers like 'save resources'; instead, give specific methods ('turn off taps', 'use LED bulbs'). Do not confuse renewable and non-renewable; revise NCERT definitions. In case-based questions, answer all sub-parts. Finally, manage time — do not spend ten minutes on a 2-mark question when a 5-mark question awaits.

Can I score full marks in 5-mark questions without writing long paragraphs?+

Yes. CBSE marking schemes reward clarity and completeness, not length. Structure your answer with an introduction, 3-4 numbered points (each with an example or explanation), and a brief conclusion. Use bullet points if allowed. A well-organised half-page answer often scores more than a rambling full page.

How does CBSETUTOR.ai help with Chapter 11 preparation?+

CBSETUTOR.ai provides instant, step-by-step solutions to any question via photo upload, generates unlimited practice questions at all marks levels, and offers 24×7 doubt resolution. At ₹999/month for all subjects (Classes 6-12), it replaces expensive tuition. A 3-day free trial lets you test the AI tutor risk-free before committing.

What is a good revision strategy one week before the exam?+

Day 1-2: Read NCERT and make a one-page summary. Day 3: Solve all NCERT questions. Day 4-5: Attempt 1-mark, 2-mark questions from this page. Day 6: Tackle 3-mark, 5-mark questions. Day 7: Take a full-chapter mock test. Day 8: Revise diagrams and flashcards. Day 9: Light review and clarify doubts. Day 10: Read summary and sleep well.

Are case-based questions difficult in Chapter 11?+

Case-based questions look long but are often easier than they appear. They present a short scenario (e.g. water scarcity in a village) followed by 2-3 sub-questions (identify causes, suggest solutions). Each sub-question is 1-2 marks. Read the case carefully, underline key facts, and answer each sub-part in order. Practise two or three cases, and you will find them scoring.

How can I remember conservation methods for water, air, and soil?+

Use the mnemonic 'RAP': Reduce waste (turn off taps, use less plastic), Adopt green practices (plant trees, use public transport), Prevent pollution (treat waste, avoid burning). For each resource, list two specific actions. Write them on flashcards and revise daily. Teaching a family member also reinforces memory.

Why does CBSE ask value-based questions on conservation?+

CBSE integrates values like environmental responsibility and sustainable living into the curriculum. Value-based questions test ethical reasoning: 'Why should we conserve resources for future generations?' Answer with both scientific reasons (limited availability) and ethical ones (responsibility to the planet). These questions are easy marks if you connect science to real life.

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