NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1245 - 1248 of 2028
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Question 1245
Question MCQ▾
Method/methods of irrigation which are composed of pipelines in which nozzles are fitted at various locations. Water comes out of the nozzle and is sprinkled on plants, called:
Choices
Choice (4) | Response | |
---|---|---|
a. | Sprinkler system | |
b. | Drip irrigation | |
c. | None of the above | |
d. | All of the above |
Question 1246
Question MCQ▾
The process by which ammonia is converted to nitrites and then to nitrates is called:
Choices
Choice (4) | Response | |
---|---|---|
a. | Nitrogen cycle | |
b. | Nitrogenous | |
c. | Denitrification | |
d. | Nitrification |
Question 1247
Question MCQ▾
The advantage of levelling is:
I. It does not break crumbs into smaller pieces
II. It protects the upper fertile layer of soil from erosion
III. It helps the soil to retain moisture
IV. It promotes uniform irrigation
Find the correct statement/statement (s) .
Choices
Choice (4) | Response | |
---|---|---|
a. | II, III and IV only | |
b. | II and III only | |
c. | I, II, III and IV only | |
d. | I and IV only |
Question 1248
Question MCQ▾
The process by which humans change the characteristics of plants over time to make them better crops and more nourishing food. It is a science based on principles of genetics and cytogenetic. It aims at improving the genetic makeup of the crop plants is called:
Choices
Choice (4) | Response | |
---|---|---|
a. | Crop improvement | |
b. | Eugenics | |
c. | Plant breeding | |
d. | Genetic engineering |