Kidney crystals are solid clusters of
A. Calcium nitrate and uric acid
B. Calcium phosphate and uric acid
C. Calcium carbonate and uric acid
D. Calcium metabisulfite and uric acid

Hint: A thin, difficult deposit that forms in the kidneys when passed, which is sometimes painful. In concentrated urine, kidney stones are strong deposits of minerals and acid salts that stick together. When going through the urinary tract, they can be painful, but typically don't cause permanent damage.

Complete answer:

A solid cluster made up of tiny crystals is a kidney stone.Groups of kidney stones are as follows:A particular metabolic or hormonal condition, such as hyperparathyroidism of renal tubular acidosis, is associated with calcium phosphate stones.A byproduct of protein metabolism is uric acid stones. Uric acid stones are associated with consuming a diet that is rich in protein. Gout, genetic factors and disorders associated with the treatment of chemotherapy can cause them to occur.Struvite stones are connected to an infection of the urinary tract caused by a particular bacterial type.In people who have cystinuria, a genetic condition that causes the kidneys to excrete large quantities of certain amino acids, cystine stones may develop.Calcium oxalate stones are about 85 percent of kidney stones are made of calcium, typically forming from excess calcium in the urine.
So, the correct answer is “Option B”.

Note: Kidney crystals are hard deposits that form within your kidneys, made from minerals and salt. Passing kidney stones may be very painful, but if recognized in a timely manner, the stones usually do no lasting harm. You can need nothing more than to take painkillers and drink plenty of water to push through a kidney stone, depending on your condition. For example, in other cases, if stones are embedded in the urinary tract, they are associated with urinary infection or cause complications. Surgery may be required.