alleryStart learning →Which oxides easily undergo thermal decomposition because they are highly unstable?
AAl2O3 and MgO
BAg2O and HgO
CCaO and Na2O
DCr2O3 and TiO2
Answer & Solution
Correct answer: B. Ag2O and HgO
Silver and mercury oxides have weakly negative free energies of formation, so heating alone gives back the metal.
Keep practising Extractive Metallurgy
Browse all Extractive Metallurgy questions for Bihar Board Class 12 (Science), or explore more Chemistry topics.
Related questions
Flotation is used to purify which compound from sodium chloride and clay?Which collectors have been used for oxide minerals in flotation?What are the minerals that do not float into the froth called?What is the first flotation stage, which gives a rougher concentrate, called?Which of these is a typical depressant in froth flotation?Which substance is added as a frother to stabilise foam in flotation?Which class of salts is particularly popular as collectors for sulfide minerals?Froth flotation separates minerals from gangue by exploiting differences in what?