If water contains dissolved calcium hydrogencarbonate,out of soaps and synthetic detergents which one will you use for cleaning clothes?

Which one of the following compounds is an antifertility drug?

Which of the following is an antifertility drug?

Which of the following statements are correct?
$I$. Binding of inhibitor at allosteric site changes the shape of the active site.
$II$. Shape of the receptor does not change after attachment of chemical messenger to it.
$III$. $A$ chemical messenger gives message to the cell by entering it.
$IV$. Erythromycin is an example of bacteriostatic antibiotic.

Which of the following drugs acts as an antibiotic?

Which of the following is $NOT$ an antacid?