Natural fibers are derived from plants and animals. Wool, cotton, and mohair are natural fibers, while rayon is a man-made or semi-synthetic fiber created from cellulose.
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: