Pick up the correct statement from the following: A. The larger the sewer in size, more will be velocity B. The smaller the sewer in size, less will be velocity C. The larger the sewer in size, no deposition will take place D. The larger the sewer in size, deposition will take place

The correct answer is A. The larger the sewer in size, more will be velocity.

The velocity of a fluid is the rate at which it flows. In the case of a sewer, the velocity of the wastewater is determined by the size of the sewer, the slope of the sewer, and the amount of wastewater flowing through the sewer.

The larger the sewer, the greater the cross-sectional area of the sewer. This means that there is more room for the wastewater to flow, and so the velocity of the wastewater will be greater.

The slope of the sewer also affects the velocity of the wastewater. The steeper the slope, the faster the wastewater will flow.

The amount of wastewater flowing through the sewer also affects the velocity of the wastewater. The more wastewater flowing through the sewer, the greater the velocity of the wastewater.

Deposition is the process of sediment settling out of a fluid. In the case of a sewer, deposition can occur when the velocity of the wastewater is too low. When the velocity of the wastewater is too low, the sediment has time to settle out of the wastewater and build up on the bottom of the sewer.

Deposition can cause a number of problems, including blockages, flooding, and the release of pollutants into the environment. To prevent deposition, it is important to maintain a high velocity in sewers. This can be done by ensuring that the sewers are properly sized and sloped, and by preventing the build-up of sediment.