Silicates of \(\text{Cu}\) and \(\text{Fe}\)
Copper matte is primarily composed of copper and iron sulphides. It is obtained during the process of smelting copper ores. The smelting process involves heating copper ores in the presence of a flux to separate impurities. The resultant mixture, known as matte, typically contains copper and iron in the form of their sulphides (\(\text{Cu}_2\text{S}\) and \(\text{FeS}\)).
Two liquids A and B have $\theta_{\mathrm{A}}$ and $\theta_{\mathrm{B}}$ as contact angles in a capillary tube. If $K=\cos \theta_{\mathrm{A}} / \cos \theta_{\mathrm{B}}$, then identify the correct statement:
In a messenger RNA molecule, untranslated regions (UTRs) are present at:
I. 5' end before start codon
II. 3' end after stop codon
III. 3' end before stop codon
IV. 5' end after start codon