Which of the following bases is found only in $RNA$ but not in $DNA$?

Among the following compounds,which one is found in $RNA$?

Which part of $DNA$ acts as a messenger for the synthesis of proteins?

Which of the following statements is not true about $RNA$?

The pyrimidine bases present in $DNA$ are

The difference between $DNA$ and $RNA$ is based on the presence or absence of a hydroxyl group at which carbon atom of the sugar molecule?