Correct Answer - A
Magnesium uranyl test for `Na^(o+)`
`Na+underset(darr)(3UO_(2))(CH_(3)COO)_(2)+Mg(CH_(3)COO)_(2)`
`CH_(3)COO^(Θ)+9H_(2)O+NaMg underset("acetate")underset("sodium magnesium uranyl")underset("Yellow ppt. of")((CO_(3))_(2)(CH_(3)OO)_(9)).9H_(2)O`
