12. What is force? 13. Name the process of adding manure to the soil. 14. Name any two Rabi crops. 15. Name the force due to which every object falls on earth. 16. What is the name of the instrument used to measure atmospheric pressure? 17. Define fossil fuels. 18. Write the full form of LPG. 19. Which gas is produced when coal is burnt in air?
Answers
Answer:
12. A force is a push or pull acting on an object.
13. manuring
14. wheat , barley
15. gravitational force
16. barometer
17.A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion.
18. liquified petroleum gas
19. carbon dioxide gas
Answer:
Explanation:
12: any push or pull is force
13: manuring
14: wheat, gram,
15: gravity
16: barometer
17: Fossil fuel. Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of dead plants and animals. In common dialogue, the term fossil fuel also includes hydrocarbon-containing natural resources that are not derived from animal or plant sources.
18: liquid patroleum gas
19: carbon dioxide
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