Reduction firing creates a low-oxygen atmosphere that enhances the chemical reactions of metallic oxides in glazes, resulting in bright, vivid colors. Other effects like crystalline surfaces or crazing occur in different firing processes.
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: