Answer to Question 1
ANS: B
Uremic frost is the deposition of urea crystals on the skin, not in the urine. The kidneys are unable to excrete blood urea nitrogen, leading to elevated levels. There is no relation between cold temperatures and uremic frost.
Answer to Question 2
ANS: C
Dietary phosphorus is controlled to prevent or control the calcium/phosphorus imbalance by the reduction of protein and milk intake. Protein should be limited in chronic renal failure to decrease intake of phosphorus. Vitamin D therapy is administered in chronic renal failure to increase calcium absorption. Supplementation with vitamins A, E, and K is not part of dietary management in chronic renal disease.