Question

Rani had an uneven plot of land in which water was scarce. What system can she adopt for irrigation?
A) Canal
B) Sprinkler
C) Drip
D) Hand pump

Answer 1

Hint: An artificial process of applying controlled amounts of water to land to assist in the production of crops is called irrigation. There are different types of irrigation and we can see a few of them the above-mentioned options.

Complete answer:
Now let us look at the given options:
Option (A) Canal – It is an artificial channel that is constructed with the purpose of carrying water from rivers, tanks or reservoirs to the field that has to be irrigated. It has nothing to do with the evenness of the field. Thus, this option is incorrect.
Option (B) Sprinkler – It is a device that is used to irrigate crops, lawns, golf courses, etc. It is very useful on uneven lands or on sandy soils, where water supply is not sufficient or available. It has a network of pipes and valves that carry water to different parts of the field and it has a high-pressure sprinkler that showers water all over the field. This method is suitable for Rani’s uneven plot of land.
Option (C) Drip – It is a method for water and nutrient conservation, and it does so by allowing water to drip slowly to the roots of the plants (either from above the soil or buried under the soil). This is used in the case of even fields and is not the correct option.
Option (D) Hand pump – They are manually operated water pumps that allow access to deeper groundwater that is free from pollution and contamination. This method is used to prevent contamination of groundwater and is not related to the evenness of the land. This option is wrong.

Thus, the correct answer is Option (B) Sprinkler.

Note: When sprinklers are used, the water stagnant in the hose and the warmth from the sun promotes the growth of Legionella (a free-living amoeba) in the hose. These bacteria can be inhaled by humans when the sprinklers are working and generating aerosol. It causes Pontiac fever or Legionnaires disease.