The Narmada Main Canal, which originates from the Sardar Sarovar Dam, is technically significant because
- AIt is the longest lined irrigation canal in the world.Correct
- BIt flows entirely by pumping systems rather than gravity.
- CIt is an unlined canal designed to recharge groundwater along its path.
- DIt carries only industrial wastewater.
Solution
Concept
Narmada Main Canal and Canal Lining
Formula
N/A
Step-by-step solution
1. Analyze the question regarding the technical significance of the Narmada Main Canal. 2. Recall that the canal is completely lined with concrete to prevent seepage, making it the longest lined irrigation canal in the world. 3. Compare with the given options and select Option A.
Explanation
The Narmada Main Canal is technically significant because it is completely lined with concrete along its entire length to prevent water loss through seepage, making it the longest lined irrigation canal in the world.
Shortcut
To remember the technical significance of the Narmada Main Canal, use the phrase "Narmada = Longest Lined": - Longest Lined: It is the world's longest lined irrigation canal. - Concrete Lining: Completely lined with concrete to prevent seepage losses.
Common mistake
A common mistake is selecting option C by assuming that large irrigation canals are left unlined to recharge local groundwater. In reality, the Narmada Main Canal is completely lined with concrete to prevent massive seepage losses, making it the longest lined irrigation canal in the world. Another common mistake is selecting option B by assuming it relies on continuous pumping, whereas it operates primarily as a gravity flow canal.
Correct answer: A) It is the longest lined irrigation canal in the world.