Engobe is a decorative slip applied to pottery during the leather hard stage. At this stage, the clay is firm yet moist, allowing the engobe to bond effectively. Applying it during other stages may result in poor adhesion or flaking.
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: