MCQ
The composition of urine is:
  • A
    $25\%$ water, $2.5 \%$ urea and $2.5\%$ other waste.
  • $95\%$ water, $2.5\%$ urea and $2.5\%$ other waste.
  • C
    $95\%$ water, $2.5\%$ urea and $12.5\%$ other waste.
  • D
    None of the above.

Answer

Correct option: B.
$95\%$ water, $2.5\%$ urea and $2.5\%$ other waste.

An adult human on average excretes $1$ to $1.5$ litres of urine per day.
It is light yellow in colour, slightly acidic with a characteristic odour.
The composition of urine is $95\%$ water, $2.5\%$ urea and $2.5\%$ other waste.

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