Crop Production and Management-Manure and Fertilizers [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 3 of 3
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Question 1
Question MCQ▾
What is eutrophication
Choices
Choice (4) | Response | |
---|---|---|
a. | Leaching of nitrates to ground water | |
b. | Leaching of nitrates and phosphates into the soil | |
c. | Leaching of nitrates and phosphate into rivers | |
d. | Leaching of nitrates and phosphates to drinking water |
Question 2
Question MCQ▾
Gases released during the formation of manure are
Choices
Choice (4) | Response | |
---|---|---|
a. | Co, Co2 and CH4 | |
b. | O2, Co2 and CH4 | |
c. | CH4, Co2 and H2O | |
d. | Co2, So2 and CH4 |
Question 3
Question MCQ▾
Follow to replenish the lost nutrients is called
Choices
Choice (4) | Response | |
---|---|---|
a. | Crop rotation | |
b. | Manuring | |
c. | Fallowing | |
d. | Transplantation |