Class 9 Science MCQ Chapter 14 Natural resources, Class 9 Science MCQ Question Answer, Class 9 Science Multiple Choice Question Answer to each chapter is provided in the list of SCERT Science Class 9 Objective Types Question Answer so that you can easily browse through different chapters and select needs one. Class 9 Science MCQ Chapter 14 Natural resources Question Answer can be of great value to excel in the examination.
SCERT Class 9 Science MCQ Chapter 14 Natural resources
SCERT Class 9 Science MCQ Chapter 14 Natural resources Notes covers all the exercise questions in SCERT Science Textbooks. The NCERT Class 9 Science MCQ Chapter 14 Natural resources provided here ensures a smooth and easy understanding of all the concepts. Understand the concepts behind every chapter and score well in the board exams.
Natural resources
Chapter – 14
Multiple Choice Questions & Answers
1. Water covers
(d) 71% of earth surface
(b) 77% of earth surface
(c) 75% of earth surface
(d) 71% of earth surface
Ans. (c) 75% of earth surface.
2. The fossil fuels like coal and petroleum contain small amounts of nitrogen and
(a) chlorine
(b) phosphorus
(c) Iodine
(d) sulphur
Ans. (d) sulphur.
3. During the day, the direction of wind would be from the
(a) sea to land
(b) land to sea
(c) land to sky
(d) All of the above
Ans. (a) sea to land.
4. temperature of moon ranges from
(a) 100°C to 110°C
(b) 190°C to 110°C
(c) 180°C to 110°C
(d) 140°C to 110°C
Ans. (b) 190°C to 110⁰.
5. Many of the marine animals us carbonates dissolved in sea water make their
(a) gill
(b) fish scale
(c) shells
(d) fin
Ans. (c) shells.
6. the atmosphere on the venus and mars, carbon dioxide constitutes upto
(a) 90-98%
(b) 95-97%
(c) 90-97%
(d) 90-99%
Ans. (b) 95-97%
7. In large parts of India, rains are mostly brought by the south-west or
(a) North-east monsoons
(b) East-west monsoons
(c) South monsoon
(d) East monsoon
Ans. (b) East-west monsoons.
8. Which of the following is not the source of fresh water?
(a) ice-caps at the two poles
(b) snow covered mountain
(c) underground water
(d) sea water
Ans. (d) sea water.
9. deforestation
(a) destroys biodiversity
(b) leads of soil erosion
(c) both (a) and (b)
(d) None of the above
Ans. (c) both (a) and (b)
10. Nitrogen gas makes up
(a) 80% of atmosphere
(b) 78% of atmosphere
(c) 76% of atmosphere
(d) 74% of atmosphere
Ans. (b) 78% of atmosphere.
11. Which of the following gas is green house gas?
(a) Carbon dioxide
(b) Sulphur dioxide
(c) Magnesium oxide
(d) Aluminium oxide
Ans. (a) Carbon dioxide.
12. Which of the following gas is a very abundant element on our earth?
(a) Nitrogen
(b) Oxygen
(c) Sulphur
(d) Chlorine
Ans. (b) Oxygen.
13. Oxygen gas makes up
(a) 29% of atmosphere
(b) 27% of atmosphere
(c) 23% of atmosphere
(d) 21% of atmosphere
Ans. (d) 21% of atmosphere.
14. What is the chemical formula of ozone?
(a) O4
(b) O3
(c) O2
(d) O
Ans. (b) O3.
15. Which of the following gas absorbs harmful radiation from the sun?
(a) Ozone
(b) CFC
(c) Fluorine
(d) Chlorine
Ans.(a) Ozone.
16. Oxygen is returned to the atmosphere only one major process, that is
(a) breathing
(b) oxygen cycle
(c) nitrogen cycle
(d) photosynthesis
Ans. (d) photosynthesis.
17. Which of the following statement is incorrect?
(a) ozone is poisonous
(b) ozone has three atoms of oxygen
(c) ozone is a green house gas
(d) ozone layer allow to come harmful radiation to earth.
Ans. (d) ozone layer allow to come harmful radiation to earth.
18. Which of the following is correct?
(a) oxygen is a very abundant element on our earth.
(b) oxygen is returned to the atmosphere in many different way.
(c) oxygen from the atmosphere is used up in four processes.
(d) bacteria takes places in the presence of oxygen.
Ans. (a) oxygen is a very abundant element on our earth.
19. Satellite picture showing hole in the ozone layer over
(a) Africa
(b) Antarctica
(c) America
(d) Europe
Ans. (b) Antartica.
Very Short Answer Type Questions
1. What are the resources on the earth?
Ans. The, land, the water and the air are the resources on the earth.
2. What is called lithosphere?
Ans. The outer crust of the earth is called the lithosphere.
3. What is called hydrosphere?
Ans. Water covers 75% of the earth surface. It is also found underground. It is called hydrosphere.
4. What is called atmosphere?
Ans. The air that covers the whole of the earth like a blanket is called the atmosphere.
5. What is called biosphere?
Ans. Living things are found in lithosphere hydrosphere and atmosphere. It is called biosphere.
6. Write the abiotic component of the biosphere.
Ans. air, water and soil.
7. Why do not contain the atmosphere in the moon?
Ans. The range of temperature in the moon is from 190°C to 110°C. So, there is no atmosphere in moon.
8. What is called wind?
And. The movement of air from one region to other is called wind.
9. During the night, what is the direction of wind in the sea area?
Ans. land to sea.
10. When do the form of snow, sleet or hail?
Ans. When the temperature of air is low enough.
11. What are the name of monsoons which is brought rains mostly in largest area of India?
Ans. South west or north east monsoon.
12. What is smog?
Ans. Smog could be unburnt carbon particles or hydrocarbon.
13. Which water is saline?
Ans. seas and oceans.
14. How such water needs of terrestrial life?
Ans. fresh water.
15. What is called soil?
Ans. Earth are broken down by various physical, chemical and some biological processes. The end product of this breaking down is the fine particles. This is called soil.
16. Nitrogen is a part of many molecules essential to life. Why is it?
Ans. Nitrogen is found in proteins, nucleic acids (DNA and RNA) and some vitamins. So nitrogen is essential to life.
17. Where are found nitrogen fixing bacteria?
Ans. Nitrogen fixing bacteria is found in the roots of legumes in special structures called nodules.
18. What are found in the elemental form of carbon?
Ans. diamond end graphite.
19. Write a name of gas which leads to global warming.
Ans. Carbon dioxide.
20. What i the very abundant element on our earth?
Ans. oxygen.
21. What is the full form CFC?
Ans. CFC-Chloroflouro carbon.
22. Write a name of man-made compound which leads to ozone layer depleted.
Ans. CFC.
23. What is the process, the usable oxygen return to atmosphere?
Ans. Photosynthesis.
24. What is the oxygen for nitrogen fixing bacteria?
Ans. Poisonous substance.
