SEBA Class 9 Science Chapter 14 Natural Resources MCQs (2026–27) – Assam Eduverse
Explore the importance of our environment with SEBA Class 9 Science Chapter 14 Natural Resources MCQs (2026–27), designed according to the latest ASSEB syllabus and current board exam pattern. These SEBA Class 9 Science Chapter 14 Natural Resources MCQs include important objective questions, concept-based MCQs, and case-oriented sets to support effective exam preparation.
Prepared by Assam Eduverse subject experts, these SEBA Class 9 Science Chapter 14 MCQs cover key topics such as air, water, soil, atmosphere, water cycle, carbon cycle, nitrogen cycle, greenhouse effect, ozone layer, and environmental balance. Practicing these Natural Resources MCQs Class 9 SEBA and Assam Board Class 9 Science objective questions helps build conceptual clarity and environmental awareness. You can also explore more practice from Class 9 Science chapterwise MCQs and SEBA Class 9 MCQs.
Regular practice of these ASSEB Class 9 Science Important MCQs will strengthen your preparation and improve exam performance. For detailed explanations, visit SEBA Class 9 Science Chapter 14 Natural Resources Solutions, or explore additional resources like SEBA Class 9 & 10 study materials and SEBA Class 9 syllabus.
SEBA Class 9 Science Chapter 14 Natural Resources MCQs – ASSEB 2026–27 Board Exam Practice
Table of Contents
Q1. Which of the following forms the life-supporting zone of the Earth where land, water and air interact?
a) Atmosphere
b) Lithosphere
c) Biosphere
d) Hydrosphere
Answer: c) Biosphere
Q2. The outer crust of the Earth is called:
a) Hydrosphere
b) Lithosphere
c) Biosphere
d) Atmosphere
Answer: b) Lithosphere
Q3. Which gas is present in the highest percentage in Earth’s atmosphere?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
Answer: c) Nitrogen
Q4. Carbon dioxide in the atmosphere is ‘fixed’ mainly by:
a) Respiration
b) Combustion
c) Photosynthesis
d) Evaporation
Answer: c) Photosynthesis
Q5. The atmosphere prevents sudden rise in temperature during the day because air is a:
a) Good conductor of heat
b) Bad conductor of heat
c) Solid substance
d) Liquid substance
Answer: b) Bad conductor of heat
Q6. During the day in coastal areas, wind blows from:
a) Land to sea
b) Sea to land
c) North to south
d) Mountains to plains
Answer: b) Sea to land
Q7. At night in coastal areas, wind blows from:
a) Sea to land
b) Land to sea
c) East to west
d) South to north
Answer: b) Land to sea
Q8. Clouds are formed due to:
a) Evaporation only
b) Condensation of water vapour
c) Freezing of water
d) Melting of ice
Answer: b) Condensation of water vapour
Q9. The process in which water evaporates, falls as rain and flows back to seas is called:
a) Carbon cycle
b) Nitrogen cycle
c) Oxygen cycle
d) Water cycle
Answer: d) Water cycle
Q10. Smog is mainly formed due to:
a) Pure oxygen
b) Dust and harmful gases
c) Nitrogen alone
d) Water vapour only
Answer: b) Dust and harmful gases
Q11. Water is essential for organisms because:
a) It gives colour
b) It dissolves substances and supports reactions
c) It increases body weight
d) It produces light
Answer: b) It dissolves substances and supports reactions
Q12. The addition of harmful substances like fertilizers and pesticides into water bodies causes:
a) Soil erosion
b) Air pollution
c) Water pollution
d) Global warming
Answer: c) Water pollution
Q13. Soil is formed mainly by the breaking down of:
a) Plants
b) Rocks
c) Animals
d) Clouds
Answer: b) Rocks
Q14. Humus in soil is formed from:
a) Sand particles
b) Decayed plants and animals
c) Water droplets
d) Air bubbles
Answer: b) Decayed plants and animals
Q15. Removal of top fertile layer of soil by wind or water is called:
a) Soil formation
b) Soil erosion
c) Soil pollution
d) Weathering
Answer: b) Soil erosion
Q16. Nitrogen-fixing bacteria are commonly found in the roots of:
a) Mango plants
b) Leguminous plants
c) Coconut trees
d) Cactus plants
Answer: b) Leguminous plants
Q17. During lightning, nitrogen is converted into:
a) Carbon dioxide
b) Nitrites and nitrates
c) Oxygen
d) Methane
Answer: b) Nitrites and nitrates
Q18. The process that returns oxygen to the atmosphere is:
a) Respiration
b) Combustion
c) Photosynthesis
d) Nitrogen fixation
Answer: c) Photosynthesis
Q19. An increase in carbon dioxide in the atmosphere leads to:
a) Ozone depletion
b) Greenhouse effect
c) Soil erosion
d) Nitrogen fixation
Answer: b) Greenhouse effect
Q20. Ozone is a molecule made up of:
a) Two oxygen atoms
b) Three oxygen atoms
c) One oxygen atom
d) Four oxygen atoms
Answer: b) Three oxygen atoms
Q21. Assertion (A): Land gets heated faster than water during the day.
Reason (R): Water has a higher heat capacity than land.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation of A
Q22. Assertion (A): Lichens are good indicators of air pollution.
Reason (R): Lichens are very sensitive to sulphur dioxide.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation of A
Q23. Assertion (A): Oxygen level in atmosphere remains fairly constant.
Reason (R): Photosynthesis and respiration balance each other.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation of A
Q24. Assertion (A): Excess use of fertilizers can reduce soil fertility.
Reason (R): Fertilizers can kill useful soil microorganisms.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation of A
Q25. Assertion (A): Carbon dioxide is called a greenhouse gas.
Reason (R): It traps heat in the atmosphere.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation of A
Q26. Assertion (A): Water availability affects biodiversity in a region.
Reason (R): Regions with more rainfall generally support more plant and animal life.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation of A
Q27. Assertion (A): Soil with more humus is more fertile.
Reason (R): Humus makes soil porous and allows air and water to penetrate.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation of A
Q28. Assertion (A): Burning fossil fuels increases carbon dioxide in air.
Reason (R): Combustion releases carbon dioxide.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation of A
Q29. Assertion (A): Ozone is poisonous near the Earth’s surface.
Reason (R): Ozone absorbs harmful ultraviolet radiation in the upper atmosphere.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: b) Both A and R are true but R is not the correct explanation of A
Q30. Assertion (A): Dissolved oxygen is important for aquatic life.
Reason (R): Reduction in dissolved oxygen affects aquatic organisms.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation of A
Q31. Which of the following are greenhouse gases?
i) Carbon dioxide
ii) Oxygen
iii) Water vapour
iv) Nitrogen
a) i and iii
b) ii and iv
c) i and ii
d) iii and iv
Answer: a) i and iii
Q32. Which processes use oxygen?
i) Respiration
ii) Combustion
iii) Photosynthesis
iv) Formation of oxides of nitrogen
a) i, ii and iv
b) i and iii
c) ii and iii
d) iii and iv
Answer: a) i, ii and iv
Q33. Soil formation is influenced by:
i) Sun
ii) Water
iii) Wind
iv) Living organisms
a) i and ii
b) i, ii and iii
c) i, ii, iii and iv
d) ii and iv
Answer: c) i, ii, iii and iv
Q34. Water pollution includes:
i) Addition of harmful substances
ii) Removal of dissolved oxygen
iii) Change in temperature
iv) Increase in rainfall
a) i and iv
b) i, ii and iii
c) ii and iii
d) iii and iv
Answer: b) i, ii and iii
Q35. Nitrogen is a part of:
i) Proteins
ii) Nucleic acids
iii) Vitamins
iv) Glucose
a) i and ii
b) i, ii and iii
c) ii and iv
d) iii and iv
Answer: b) i, ii and iii
Q36. Which activities increase carbon dioxide levels?
i) Respiration
ii) Combustion
iii) Photosynthesis
iv) Industrial activities
a) i and iii
b) i, ii and iv
c) ii and iii
d) iii and iv
Answer: b) i, ii and iv
Q37. Fresh water is found in:
i) Rivers
ii) Oceans
iii) Lakes
iv) Ice caps
a) i and ii
b) ii and iii
c) i, iii and iv
d) ii and iv
Answer: c) i, iii and iv
Q38. Air pollution may lead to:
i) Allergies
ii) Cancer
iii) Heart diseases
iv) Increased soil fertility
a) i and ii
b) i, ii and iii
c) ii and iv
d) iii and iv
Answer: b) i, ii and iii
Q39. The nitrogen cycle involves:
i) Nitrogen fixation
ii) Nitrification
iii) Denitrification
iv) Photosynthesis
a) i, ii and iii
b) ii and iv
c) i and iv
d) iii and iv
Answer: a) i, ii and iii
Q40. Soil erosion can be reduced by:
i) Planting trees
ii) Maintaining vegetation cover
iii) Deforestation
iv) Terrace farming
a) i and ii
b) i, ii and iv
c) ii and iii
d) iii and iv
Answer: b) i, ii and iv
Q41. Match the following:
| Column I | Column II |
|---|---|
| A. Lithosphere | 1. Life-supporting zone |
| B. Hydrosphere | 2. Outer crust of Earth |
| C. Atmosphere | 3. Water bodies |
| D. Biosphere | 4. Blanket of air |
a) A-2, B-3, C-4, D-1
b) A-3, B-2, C-1, D-4
c) A-4, B-3, C-2, D-1
d) A-1, B-4, C-3, D-2
Answer: a) A-2, B-3, C-4, D-1
Q42. Match the following:
| Column I | Column II |
|---|---|
| A. Evaporation | 1. Water vapour turns into droplets |
| B. Condensation | 2. Water vapour forms from liquid water |
| C. Precipitation | 3. Rainfall |
| D. Collection | 4. Water gathers in rivers and seas |
a) A-2, B-1, C-3, D-4
b) A-1, B-2, C-4, D-3
c) A-3, B-4, C-2, D-1
d) A-4, B-3, C-1, D-2
Answer: a) A-2, B-1, C-3, D-4
Q43. Match the following:
| Column I | Column II |
|---|---|
| A. Humus | 1. Indicator of air pollution |
| B. Soil erosion | 2. Decayed organic matter |
| C. Smog | 3. Removal of top soil |
| D. Lichens | 4. Air pollution with smoke and fog |
a) A-2, B-3, C-4, D-1
b) A-3, B-2, C-1, D-4
c) A-4, B-1, C-2, D-3
d) A-1, B-4, C-3, D-2
Answer: a) A-2, B-3, C-4, D-1
Q44. Match the following:
| Column I | Column II |
|---|---|
| A. Nitrogen fixation | 1. Converts nitrogen into nitrates naturally |
| B. Lightning | 2. Nitrogen-fixing bacteria present here |
| C. Root nodules | 3. Conversion of nitrates into nitrogen gas |
| D. Denitrification | 4. Conversion of nitrogen into usable form |
a) A-4, B-1, C-2, D-3
b) A-1, B-4, C-3, D-2
c) A-2, B-3, C-1, D-4
d) A-3, B-2, C-4, D-1
Answer: a) A-4, B-1, C-2, D-3
Q45. Match the following:
| Column I | Column II |
|---|---|
| A. Photosynthesis | 1. Trapping of heat in atmosphere |
| B. Respiration | 2. Releases carbon dioxide |
| C. Combustion | 3. Uses carbon dioxide |
| D. Greenhouse effect | 4. Burning of fuels |
a) A-3, B-2, C-4, D-1
b) A-2, B-3, C-1, D-4
c) A-4, B-1, C-2, D-3
d) A-1, B-4, C-3, D-2
Answer: a) A-3, B-2, C-4, D-1
Q46. Match the following:
| Column I | Column II |
|---|---|
| A. Oxygen cycle | 1. Circulation of water in nature |
| B. Carbon cycle | 2. Balance of oxygen in atmosphere |
| C. Water cycle | 3. Movement of carbon through organisms |
| D. Nitrogen cycle | 4. Conversion of nitrogen into usable forms |
a) A-2, B-3, C-1, D-4
b) A-3, B-1, C-4, D-2
c) A-1, B-2, C-3, D-4
d) A-4, B-3, C-2, D-1
Answer: a) A-2, B-3, C-1, D-4
Q47. Match the following:
| Column I | Column II |
|---|---|
| A. Fertilisers | 1. Thermal pollution |
| B. Pesticides | 2. Agricultural chemicals |
| C. Sewage | 3. Domestic waste |
| D. Hot water discharge | 4. Water pollution source |
a) A-2, B-2, C-3, D-1
b) A-3, B-1, C-4, D-2
c) A-2, B-4, C-3, D-1
d) A-4, B-3, C-2, D-1
Answer: c) A-2, B-4, C-3, D-1
Q48. Match the following:
| Column I | Column II |
|---|---|
| A. Ozone | 1. Harmful radiation |
| B. CFCs | 2. Ozone depletion |
| C. Ultraviolet rays | 3. Ozone hole observed |
| D. Antarctica | 4. Protects Earth from radiation |
a) A-4, B-2, C-1, D-3
b) A-2, B-1, C-4, D-3
c) A-3, B-4, C-2, D-1
d) A-1, B-3, C-2, D-4
Answer: a) A-4, B-2, C-1, D-3
Q49. Match the following:
| Column I | Column II |
|---|---|
| A. Sea breeze | 1. Wind from sea to land |
| B. Land breeze | 2. Wind from land to sea |
| C. Low pressure | 3. Cooler dense air |
| D. High pressure | 4. Rising warm air |
a) A-1, B-2, C-4, D-3
b) A-2, B-1, C-3, D-4
c) A-1, B-3, C-2, D-4
d) A-4, B-3, C-1, D-2
Answer: a) A-1, B-2, C-4, D-3
Q50. Match the following:
| Column I | Column II |
|---|---|
| A. Topsoil | 1. Prevents soil erosion |
| B. Humus | 2. Fertile upper layer |
| C. Deforestation | 3. Removal of trees |
| D. Vegetation cover | 4. Decayed organic matter |
a) A-2, B-4, C-3, D-1
b) A-3, B-2, C-1, D-4
c) A-4, B-1, C-2, D-3
d) A-1, B-3, C-4, D-2
Answer: a) A-2, B-4, C-3, D-1
SEBA Class 9 Science Chapter 14 Natural Resources MCQs – Important Objective Questions
A clear understanding of Natural Resources is essential for students to grasp how the environment functions and how different life-supporting systems are interconnected. Practicing MCQs based on the latest SEBA (ASSEB) syllabus helps students strengthen their concepts while becoming familiar with the pattern of objective questions asked in examinations.
These SEBA Class 9 Science Chapter 14 MCQs cover important topics such as composition of the atmosphere, water cycle, carbon cycle, nitrogen cycle, greenhouse effect, ozone layer depletion, and conservation of natural resources. Since many of these concepts are interconnected and concept-based, regular practice helps students develop a deeper and more structured understanding.
Working through such important objective questions for Class 9 Science also enhances analytical thinking and helps students relate theoretical concepts to real-world environmental issues. Topics like ecological balance and sustainability become easier to understand when practiced through exam-oriented questions.
Consistent practice improves accuracy, retention, and confidence, enabling students to answer questions more effectively under exam conditions. It also allows for quick revision of the entire chapter, which is especially helpful before tests and final exams.
To perform well in school exams and board-based assessments, students should regularly revise and practice these MCQs. A strong conceptual understanding combined with consistent practice will not only improve scores but also build awareness about the importance of protecting natural resources.
FAQs – SEBA Class 9 Science Chapter 14 Natural Resources MCQs
1. How many MCQs come from Natural Resources in SEBA Class 9 exam?
Around 4–5 MCQs usually come from this chapter. Focus on key topics like air, water cycle, and pollution for better accuracy.
2. Which topics are most important for Natural Resources MCQs SEBA Class 9?
Air composition, water cycle, soil, and biogeochemical cycles are most important. Revise diagrams and definitions—they often appear directly in MCQs.
3. Are 45 MCQs really coming in SEBA Class 9 Science exam as per ASSEB guidelines?
Yes, latest ASSEB pattern includes around 45 MCQs overall. Practice chapter-wise MCQs regularly to build speed and accuracy.
4. Where can I download SEBA Class 9 Natural Resources MCQs PDF with answers?
You can find free PDFs on Assam Eduverse and similar sites. Always choose updated MCQs based on the latest exam pattern.
5. Is Chapter 14 Natural Resources difficult for Class 9 students?
No, it’s easy if you understand concepts. Focus on cycles and real-life examples—this chapter is mostly conceptual, not memorization-heavy.
6. How to prepare fast for Natural Resources MCQs before exam?
Revise notes, practice MCQs, and focus on repeated questions. Assam Eduverse MCQ sets are helpful for quick last-minute revision.
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