Question

What is urine and what is the composition of urine?

Answer 1

In simple words urine is the liquid waste we excrete out . it is secreated by the kidneys .

Answer 2

Liquid waste, excreted by our body is called urine.

${ \red{ \bf{Properties \: of \: urine: }}}$

${ \green{ \bf{ Colour: }}}$

Clear yellow (due to pigment urochrome). Colour varies with the diet.

${ \green{ \bf{ Volume: }}}$

1 to 1.5 litres per day but varies.

${ \green{ \bf{pH: }}}$

5 to 8 i.e., usually it is slightly acidic (pH = 6). Protein diet makes it more acidic while vegetable diet makes it alkaline.

${ \green{ \bf{ Odour: }}}$

On standing, the smell of urine becomes strong, ammonia-like due to bacterial activity, otherwise faint smell.

${ \green{ \bf{Specific \: gravity: }}}$

1.003 to 1.035