Which of the following is not an antibiotic?

Pus is a mixture of . . . . . . .
$I$ - dead neutrophils $\quad$ $II$ - dead microbes
$III$ - damaged tissues $\quad$ $IV$ - reticulocytes
$V$ - megakaryocytes

Match the following Column-$I$ with Column-$II$ and select the correct option.

Column-$I$	Column-$II$
$(a)$ Brown rust of wheat	$(i)$ Virus
$(b)$ Tobacco mosaic	$(ii)$ Bacteria
$(c)$ Black rot of crucifers	$(iii)$ Fungi
$(d)$ Red rot of sugarcane	$(iv)$ Insects

Which test can be used to detect the amount of antibodies in serum at the nanogram level?

The painkiller $Aspirin$ is associated with which of the following properties?

Which of the following is not an autoimmune disease?