Home » MCQ on Class 9 Science Chapter 9: Gravitation

MCQ on Class 9 Science Chapter 9: Gravitation

By Abdur Rohman / June 23, 2024

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Chapter 9 of class 9 science as per the NCERT syllabus is Gravitation which deals with Gravitation, Centripetal Force, Universal Law of Gravitation, Gravitational Constant, Free Fall, Motion of Objects Under Gravity, Mass and Weight, Weight of an Object on the Moon, Thrust and Pressure, Pressure in Fluids and Buoyancy, etc.

Here, we have discussed 30 Multiple Choice Questions based on these topics of the chapter. These questions will help you to learn more about the chapter and test your knowledge.

For each question below, there are four options out of which only one option is correct. After selecting your answer, click on the submit button to see the score and review your answers.

MCQ on Class 9 Science Chapter 9

1. What do plants provide us with during photosynthesis?

A. Carbon dioxide B. Oxygen C. Nitrogen D. Methane

2. What is the process of decomposition of plant and animal refuse using earthworms called?

A. Composting B. Vermi-composting C. Green manuring D. Soil enrichment

3. Which season is associated with the cultivation of paddy, soyabean, and maize?

A. Rabi B. Kharif C. Spring D. Autumn

4. What is the primary nutrient supplied by cereals?

A. Protein B. Carbohydrate C. Fat D. Vitamins

5. What term is used for the crossing between genetically dissimilar plants?

A. Mutation B. Cloning C. Hybridisation D. Pollination

6. Which type of crop is grown specifically for animal consumption?

A. Food crops B. Fodder crops C. Commercial crops D. Cash crops

7. What type of manure involves mulching green plants into the soil?

A. Compost B. Green manure C. Vermi-compost D. Organic fertilizer

8. What is the main cause of crop failure in rain-fed areas?

A. Excessive sunlight B. Poor monsoons C. Over-fertilization D. Pesticide use

9. Which of the following is a biotic factor that affects crop production?

A. Diseases B. Drought C. Salinity D. Waterlogging

10. What is the main focus of the white revolution?

A. Food-grain production B. Milk production C. Poultry farming D. Fish farming

11. Which practice involves growing two or more crops simultaneously on the same piece of land?

A. Mixed cropping B. Inter-cropping C. Crop rotation D. Organic farming

12. What do pulses like gram and peas primarily provide?

A. Carbohydrates B. Fats C. Protein D. Vitamins

13. What is the advantage of shorter crop maturity duration?

A. Higher water usage B. Increased nutrient consumption C. Multiple rounds of crops in a year D. Reduced crop yields

14. What does the term “photoperiod” relate to?

A. Duration of sunlight B. Duration of darkness C. Duration of moonlight D. Duration of rainfall

15. Which component of soil helps in the retention of water?

A. Sand B. Clay C. Gravel D. Humus

16. What practice is used to conserve soil moisture and reduce weed growth?

A. Tilling B. Mulching C. Irrigation D. Fertilization

17. Which nutrient is primarily responsible for promoting root growth in plants?

A. Nitrogen B. Phosphorus C. Potassium D. Calcium

18. What do fertilizers mainly provide to crops?

A. Organic matter B. Essential nutrients C. Pesticides D. Soil structure

19. Which agricultural practice helps in breaking the pest life cycle?

A. Crop rotation B. Mixed cropping C. Monoculture D. Organic farming

20. Which irrigation method involves water reaching plants drop by drop?

A. Surface irrigation B. Drip irrigation C. Sprinkler irrigation D. Flood irrigation

21. What is one of the major components of the animal feed for livestock?

A. Fish meal B. Silage C. Fruits D. Green fodder

22. What is the primary benefit of organic farming?

A. Higher yield B. Chemical-free produce C. Fast growth D. Reduced labor

23. What do leguminous crops help in fixing in the soil?

A. Phosphorus B. Nitrogen C. Potassium D. Calcium

24. Which crop is known for being a good source of dietary fiber?

A. Wheat B. Sugarcane C. Rice D. Cotton

25. What is the primary cause of soil salinity?

A. Excessive rainfall B. Poor drainage C. Heavy wind D. High altitude

26. What is the main focus of integrated pest management?

A. Chemical control B. Biological control C. Sustainable pest control D. Mechanical control

27. Which farming practice involves the cultivation of crops and the rearing of animals on the same farm?

A. Mixed farming B. Monoculture C. Subsistence farming D. Commercial farming

28. Which of the following is a micronutrient for plants?

A. Nitrogen B. Phosphorus C. Zinc D. Potassium

29. What type of farming uses natural fertilizers and avoids synthetic chemicals?

A. Organic farming B. Precision farming C. Subsistence farming D. Intensive farming

30. What is the main goal of the Green Revolution?

A. Increase food grain production B. Increase milk production C. Increase fish production D. Increase poultry production

Review Your Answers Above.

The Bottom Line

I hope these 30 MCQs on Gravitation of Class 9 Science Chapter 9 have helped you in your studies and preparation.

If you have any queries, or comments or find any mistake in the above questions, feel free to contact me in the comment section below.

I would love to hear from you.

Abdur Rohman

Abdur Rohman is an Electrical Engineer from Charaideo, Assam, who wears multiple hats as a part-time teacher, blogger, entrepreneur, and digital marketer. Passionate about education, he founded The Assam School blog to provide free, comprehensive textbook solutions, MCQs (Multiple Choice Questions), and other academic content for students from Class V to XII.