Table with 2 single valued attributes will be in 1NF,
2NF because there can not be a partial key dependencies. Key can be 1 attribute or 2 attributes. If one is key then other can be dependent, if 2 attributes make key then it is trivial.
3NF, there is no question of Transitive dependencies.
BCNF, because if at all a dependency exists, the determinant will be a Key.