Which one of the following is not the way of alignment of canals?
- AWatershed canal
- BContour canal
- CDistribution canalCorrect
- DSide slope canal
Solution
Concept
Canal alignment types
Step-by-step solution
1. The ways of aligning canals are: watershed (ridge) canal, contour canal and side-slope canal. 2. A distribution canal is a type of canal by function, not an alignment.
Explanation
Canals are aligned on a ridge, along a contour, or across the side slope of the ground. "Distribution canal" refers to a canal that carries water from the main canal to the field.
Why the other options are wrong
Watershed, contour and side-slope are the three standard alignments.
Shortcut
Alignments: ridge, contour, side slope.
Common mistake
Choosing an alignment type in a "not" question.
Correct answer: C) Distribution canal