These NCERT multiple choice questions (MCQs) for Class 9 Science Chapter 14 Natural Resources are based on the latest exam pattern and have been designed to help students understand the concepts covered in this chapter. The answers to these questions are provided at the end of the document.
These MCQs can be used as a revision tool to help students prepare for their board exams. To further reinforce their understanding of the topic, students can also refer to the NCERT solutions for Class 9 Science Chapter 14 Natural Resources.
MCQ Questions for Class 9 Science Chapter 14 Natural Resources with Answers
Q1. Which of the following compound is not degraded by any biological process
(a) CFCs
(b) Glucose
(c) CH4
(d) Nitrites
And: CFCs
Q2. The gas which does not cause a greenhouse effect
(a) Ozone
(b) Carbon dioxide
(c) Methane
(d) Carbon Monoxide
Ans: Carbon Monoxide
Q3. Nitrogen-fixing bacteria are found in the roots of
(a) Wheat
(b) Pulse
(c) Maize
(d) Sugar cane
Ans: Pulse
Q4. Acid rain contains
(a) Oxides of carbon
(b) Oxides of carbon and sulphur
(c) Oxides of nitrogen
(d) Oxides of nitrogen and sulphur
Ans: Oxides of nitrogen and sulphur
Q5. The surface of the earth covered with water is
(a) 79
(b) 28
(c) 50
(d) 100
Ans: 79
Q6. Most of the water on the earth’s surface is found in
(a) Underground
(b) Ocean and sea
(c) River
(d) None of these
Ans: Ocean and sea
Q7. Which one of the following is greenhouse gas
(a) Oxygen
(b) Carbon monoxide
(c) Carbon dioxide
(d) Nitrogen
Ans: Carbon dioxide
Q8. Ozone hole was first observed over
(a) Antarctica
(b) Europe
(c) Australia
(d) America
Ans: Antarctica
Q9. The main cause of depletion of the ozone layer is excessive use of
(a) CO2
(b) CH4
(c) CFCs
(d) NO2
Ans: CFCs
Q10. the life of the supporting zone of the Earth where the atmosphere, the hydrosphere and lithosphere interact is known as
(a) Biotic zone
(b) Abiotic zone
(c) Biosphere
(d) Biome
Ans: Biosphere
Q11. Which of the following organisms are very sensitive to the level of contaminants like sulphur dioxide in the air
(a) Fungi
(b) Algae
(c) Microorganisms
(d) lichens
Ans: lichens
Q12.which one of the following factors are not responsible for the formation of soil
(a) Sun
(b) Lightening
(c) Lichens and moss
(d) Wind
Ans: Lightening
Q13. Bits of a decayed living organism in the soil is called
(a) Humus
(b) Compost
(c) Decomposer
(d) Saprobe
Ans: Humus
Q14. What percentage of nitrogen make up our environment
(a) 2%
(b) 78%
(c) 99%
(d) 3%
Ans: 78%
Q15. which one of the following are not involved in the nitrogen fixation
(a) Rhizobium
(b) Parasitic bacteria
(c) Lightning
(d) None of these
Ans: Parasitic bacteria
Q16. Which of the following does not contain nitrogen
(a) Protein
(b) Alkaloids
(c) Fats
(d) Nucleic acid
Ans: Fats
Q17. Our atmosphere contains
(a) 21% oxygen
(b) 31% oxygen
(c) 11% oxygen
(d) None of these
Ans: 21% oxygen
Q18. Nitrogen-fixing bacteria cannot fix N2 in presence
(a) CO2
(b) N2
(c) O2
(d) None of these
Ans: O2