One of these is not found in Urine

Explanation

Urine is a liquid waste product that is excreted by the kidneys. It is composed of water and various dissolved substances that the body needs to get rid of. This question is asking us to identify the substance that is not found in urine. The options given are: water, sodium chloride, nitrogenous compounds, calcium chloride, and nitrogenous salts. Water is a major component of urine and is necessary for the body to eliminate waste products. Nitrogenous compounds such as urea, uric acid, and creatinine are also found in urine. These compounds are produced by the breakdown of proteins in the body. Nitrogenous salts, such as ammonium chloride, are also found in urine. Sodium chloride, on the other hand, is not normally found in urine in significant amounts. This is because the kidneys are able to regulate the amount of sodium in the body and eliminate excess sodium through urine. Calcium chloride, while not a common component of urine, can sometimes be found in trace amounts. Therefore, the correct answer to this question is option B: Sodium chloride. It is important to note that this substance can be found in other bodily fluids, such as sweat and tears, but is not a major component of urine. Overall, understanding the composition of urine and the function of the kidneys is important in understanding this question. To learn more about this, please read the relevant sections of the recommended textbooks.