Match List I with list II and select the correct answer using the code given below the lists : List-I (Metallic oxide) A. Uranium oxide B. Cuprous oxide C. Cobalt oxide D. Chromium oxide List-II (Colour imparted to glass) 1. Red 2. Blue 3. Green 4. Yellow Code : A B C D

The coloration of glass is achieved by adding specific metallic oxides to the molten mixture. Uranium oxide (A) is primarily used to impart a yellow or canary color to glass, often referred to as 'Vaseline glass' [t2][t7][t8]. Cuprous oxide (B), which is copper(I) oxide (Cu2O), is known for producing a distinct red color in glass [t3]. Cobalt oxide (C) is a powerful colorant that consistently produces a deep, rich blue hue [t2][t3][t5]. Chromium oxide (D) is the standard additive for creating green glass [t2][t3][t5]. Matching these pairs: A-4 (Yellow), B-1 (Red), C-2 (Blue), and D-3 (Green) corresponds to the sequence 4 1 2 3. This chemical property depends on the oxidation state and concentration of the metal ions within the glass matrix [t3][t8].

Sources

1. [1] https://en.wikipedia.org/wiki/Uranium_glass