Class 8 Chapter 1 MCQ
Questions and Answers
- 1.
Which of the following is a manure?
- A.
Wheat
- B.
2,4-D
- C.
Cow dung
Correct Answer
C. Cow dungExplanation
Cow dung is a manure because it is organic matter that is derived from the waste products of cows. Manure is used as a fertilizer to improve soil fertility and provide essential nutrients for plant growth. Cow dung is rich in nitrogen, phosphorus, and potassium, which are essential nutrients for plants. It also helps in improving soil structure and water retention capacity. Therefore, cow dung is a natural and commonly used manure in agriculture.Rate this question:
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- 2.
Which of these is a nitrogen fixing bacteria
- A.
Rhizobium
- B.
Blue green algae
- C.
Pencillium
Correct Answer
A. RhizobiumExplanation
Rhizobium is a nitrogen-fixing bacteria. It forms a symbiotic relationship with leguminous plants, such as peas and beans, by colonizing their roots and converting atmospheric nitrogen into a form that the plants can use for growth. This process helps in enriching the soil with nitrogen, which is an essential nutrient for plant growth. Blue-green algae also have the ability to fix nitrogen, but in this case, Rhizobium is the correct answer as it specifically refers to a type of bacteria. Pencillium, on the other hand, is a type of fungus and does not have the ability to fix nitrogen.Rate this question:
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- 3.
Big piece of soil forming after the ploughing?
- A.
Gutter
- B.
Humbs
- C.
Crumbs
Correct Answer
C. CrumbsExplanation
After ploughing, the soil is broken up into smaller pieces called crumbs. These crumbs are formed when the plough turns over the soil, breaking it into smaller clumps. These clumps then break down further into crumbs, which are important for soil structure. Crumbs allow for better aeration and water infiltration, as well as providing a loose and friable texture that is beneficial for plant root growth. Therefore, the correct answer is "Crumbs".Rate this question:
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- 4.
Khurpi is used for -----------------------------
- A.
Weeding
- B.
Ploughing
- C.
Irrigation
Correct Answer
A. WeedingExplanation
Khurpi is a gardening tool that is specifically designed for weeding. It has a small, sharp blade that is ideal for removing weeds from the soil without disturbing the surrounding plants. Unlike ploughing, which involves turning over the soil, or irrigation, which involves watering the plants, weeding is the process of removing unwanted plants or weeds from the garden. Therefore, the correct answer is weeding.Rate this question:
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- 5.
Which is not an essential element (nutrient) for plants
- A.
Nitrogen
- B.
Zinc
- C.
Potassium
Correct Answer
B. ZincExplanation
Zinc is not an essential element (nutrient) for plants. While nitrogen and potassium are important nutrients for plant growth, zinc is not required in large quantities for plants to thrive. Although zinc can be beneficial for plants in trace amounts, it is not considered an essential nutrient for their survival. Therefore, zinc is the correct answer as it is not an essential element for plants.Rate this question:
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- 6.
Which of the following dry leaf is used for the storage of grains?
- A.
Neem
- B.
Amla
- C.
Ebony
Correct Answer
A. NeemExplanation
Neem leaves are commonly used for the storage of grains due to their insect-repellent properties. Neem contains natural compounds that act as a deterrent to pests and insects, helping to prevent infestation and damage to stored grains. The leaves are often placed in grain storage containers or bags to protect the grains from pests and maintain their quality for a longer period of time. Amla and Ebony leaves do not possess the same insect-repellent properties as Neem, making Neem the correct answer.Rate this question:
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- 7.
The process of removing grains from the stalk is called --------------------
- A.
Weeding
- B.
Threshing
- C.
Winnowing
Correct Answer
B. ThreshingExplanation
Threshing is the correct answer because it refers to the process of separating the grains from the stalk. It involves beating or shaking the stalks to loosen the grains, allowing them to fall off. Weeding is the process of removing unwanted plants or weeds from a field, which is not related to removing grains from the stalk. Winnowing, on the other hand, is the process of separating the grains from the chaff or husk by using wind or air currents. While winnowing is also a step in grain processing, it is not specifically focused on removing grains from the stalk.Rate this question:
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- 8.
Rabi seasons is from the month of __________ to __________
- A.
June to September
- B.
January to April
- C.
October to March
Correct Answer
C. October to MarchExplanation
The correct answer is October to March. This is because the Rabi season in India is associated with the winter months when crops like wheat, barley, and mustard are sown. These crops require cool weather and less rainfall, which are typically found during the months of October to March. Therefore, this period is considered the Rabi season for agricultural activities in India.Rate this question:
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- 9.
Which method of irrigation is the best way for reducing wastage of water?
- A.
Moat
- B.
Sprinkler system
- C.
Drip irrigation
Correct Answer
C. Drip irrigationExplanation
Drip irrigation is the best method for reducing water wastage because it delivers water directly to the roots of the plants in small, controlled amounts. This ensures that water is used efficiently and minimizes evaporation and runoff. Additionally, drip irrigation systems can be automated and adjusted to deliver the precise amount of water needed by each plant, further reducing wastage.Rate this question:
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- 10.
What is the full form of FCI
- A.
Food Conservation of India
- B.
Food Corporation of India
- C.
Fodder Corporation of India
Correct Answer
B. Food Corporation of IndiaExplanation
The correct answer is "Food Corporation of India." FCI is an acronym for Food Corporation of India, which is a government organization responsible for ensuring food security in the country. It plays a crucial role in procurement, storage, and distribution of food grains across India. The organization also helps in stabilizing market prices and providing food grains to the poor at subsidized rates.Rate this question:
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Mar 07, 2023Quiz Edited by
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Apr 15, 2020Quiz Created by
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