The process of selection of relative proportions of cement, sand, course aggregate and water, so as to obtain a concrete of desired quantity is known as the ________

The process of selection of relative proportions of cement, sand, course aggregate and water, so as to obtain a concrete of desired quantity is known as the ________ Correct Answer Proportioning of concrete

Proportioning of concrete result is independent of the size of stones. It is interesting to note that if sand is taken in place of stones, the same result will be obtained. The result can be verified by pouring water in the vessel, it is just full.
Bissoy MCQ

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Which of the following best explain why the lower course of a river is sometimes choked with sediments?
1. The valley of a river is widest in its lower course.
2. The velocity of a river in its lower course is low.
3. The delta sometimes develops in a river's lower course.
4. Much of the river water is drawn for irrigation in the lower course.