Which of the following conditions is harmful and leads to kidney failure?

Uremia is indicated when the blood urea level rises above . . . . . . .

Which of the following is not a function of the kidneys?

The urine passed in $Diabetes \text{ } insipidus$ is $........$.

Acute renal failure $(ARF)$ is characterised by . . . . . . .
$i$. Irreversible increase in glomerular filtration rate.
$ii$. Frequent elimination of large quantities of urine.
$iii$. Sudden worsening of renal function.
$iv$. Elevated serum creatinine levels.
Select the correct option given below.

Match column-$I$ with column-$II$.

$A$. Renal calculi	$i$. Inflammation of glomerulus
$B$. Renal failure	$ii$. Kidney stone
$C$. Glomerulonephritis	$iii$. Kidney transplantation
$D$. Uremia	$iv$. Increase blood urea level