Oxidation By Selenium Dioxide

Why heating of catalyst is discontinued the moment the oxidation of sulphur dioxide takes place ?

Oxidation of propanone with selenium oxide produces

The most common oxidation state for selenium in its compound is

Which lanthanoid compound is used as a most powerful liquid lasers after dissolving it in selenium oxychloride? a)Cerium oxide b)Neodymium oxide c)Promethium sulphate d)Ceric sulphate

Solid SeO_3 (selenium trioxide) and TeO_3 exist respectively as

Solid SeO_3 (selenium trioxide) and TeO_3 exist respectively as

Oxidation of acetaldehyde with selenium dioxide produces: