Intaglio plates require an etching press to transfer the ink from the recessed areas of the plate to the paper. The press applies even and heavy pressure, ensuring that the ink is properly embedded into the dampened paper.
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: