$0.5$ moles of a solute is present in $500\mathrm{ml}$ of the solution. Then its Molarity is

The molarity of a solution can be mathematically expressed using the formula:
 $\mathrm{Molarity}=\frac{\mathrm{Moles} \mathrm{of} \mathrm{solute}}{ \mathrm{Volume} \mathrm{of} \mathrm{solution} \mathrm{in} \mathrm{litres}}$

Substituting the provided values in the question:

$\mathrm{Molarity}=\frac{0.5}{ 0.5}=1\mathrm{M}$

So, the required solution is option A) 1M