\(HgS_{ (s) }+{ O }_{ 2(g) }\longrightarrow { Hg }_{ (l) }+{ SO }_{ 2 }\uparrow \) The above reaction is an example of _________reduction.

Metal oxide is converted into metal by the _______ process.

Cinnabar is the sulphide ore of _________ metal.

In the metallurgy of iron, limestone is added to coke. Which acts as a_______

\({ Zn }_{ (s) }+2\left[ Au(CN)_{ 2 } \right] ^{ - }_{ (aq) }\longrightarrow \left[ Zn(CN)_{ 4 } \right] ^{ 2- }_{ (aq) }+2A{ { u }_{ (s) } }\) In the above equation the oxidation state of metallic gold is_______

Sulphide ore is converted to oxide form by using the process________.

\(\Delta { G }^{ o }\) vs T plot in the Ellingham's diagram slopes downward the reaction ________.

Sodium magnesium and aluminum can be obtained from their ore by________.

Concentration of copper glance is done by________.

Which of the following mineral contains calcium as well as magnesium?

Which of the following is incorrect with respect to metallurgy of iron in the blast furnace?

Which of the following is commonly used to produce foam in froth floatation process?

Which metal is used for extraction of Au and Ag and also for galvanisation of iron objects?

Considering Ellingham diagram, which of the following metals can be used to reduce alumina? 

In the extraction of aluminium from alumina by electrolysis, cryolite is added to_______.

Flux is a substance which is used to convert_______.

Which one of the following is not feasible

Match items in column - I with the items of column – II and assign the correct code.

Which of the metal is extracted by Hall-Heroult process?

Bauxite has the composition ______.