Soil Erosion
Trending Questions
Q.
Organic nutrients are called
Fertilizer
Manure
Both A & B
None of the these
Q. What is bioremediation? How it helps in controlling soil pollution?
Q. Which among the following are the uses of chemistry in the field of agriculture?
- In the production of chemical fertilizers
- In the production of better seeds
- In the production of alloys
- In the production of chemicals to kill insects
Q. Materials of biological origin which are commonly used to maintain and improve soil fertility are
- green manures
- biofertilizers
- bioinsecticides
- both (a) and (b).
Q. Which factors does not affect the degradation of soil?
- Floods
Storms
- Afforestation
Mining
Q.
Based on the experiment, answer the following questions.
In an experiment, Reena took few healthy gram seeds and allowed them to germinate in a pot. Then she took three empty vessels and labelled them as P, Q, R and S.
In vessel P, she put soil mixed with compost.
In vessel Q, she put soil mixed with NPK fertilizer.
In vessel R, she put some soil mixed with both compost and NPK fertilizer.
In vessel S, she put some soil with no manure or fertilizer mixed with it.
Then she selected equal sized seedlings and planted two seedlings in the soil mixture in each vessel. She watered each vessel regularly.
In vessel P, she put soil mixed with compost.
In vessel Q, she put soil mixed with NPK fertilizer.
In vessel R, she put some soil mixed with both compost and NPK fertilizer.
In vessel S, she put some soil with no manure or fertilizer mixed with it.
Then she selected equal sized seedlings and planted two seedlings in the soil mixture in each vessel. She watered each vessel regularly.
- In which vessel the growth of seedling is fastest and why?
- What conclusion can be drawn from the experiment?
Q. Why is saving paper the need of the hour?
Q. Formation of plains is an example of
- Extrinsic
- Intrinsic
- Both A and B
- None
Q. Which of the following activities cannot be performed in the presence of strong winds?
1. Burning of wood
2. Generation of electricity
3. Movement of sailing yacht
4. Seeds and pollens cannot be dispersed
1. Burning of wood
2. Generation of electricity
3. Movement of sailing yacht
4. Seeds and pollens cannot be dispersed
- 2 and 4
- 1 and 4
- 2 and 3
- 1 and 2
Q. Suggest any two activities to check soil erosion in your school.
Q. Conservation of soil and water resources is more important for following all reasons except:
- For sustainability of agriculture and environment
- For ensuing growing demand for food, fiber and shelter.
- For crop management, forestry operation
- For preventing air pollution
Q. How can soil erosion be prevented?
