Chemistry Question Bank

In extractive metallurgy of zinc, partial fusion of ZnO with coke is called

In extractive metallurgy of zinc, partial fusion of ZnO with coke is called

Gº vs T plot in the Ellingham’s diagram slopes downwards for the reaction. (RPMT 2006) (a) Mg+ O MgO -> (b) 2Ag+ O Ag O -> (c) C O CO -> (d) CO O CO ->

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

Silver is obtained from Na [Ag(CN)2] by reaction with:

Cassiterite is an ore of

In the process of extraction of gold, Roasted gold ore + CN – + H2O -> [X] + HO – [X] + Zn -> [Y] + Au Identify the complexes [X] and [Y]

Copper and lead are mainly extracted by

Which of the following is a sulphide ore?

The cyanide process is used for the extraction of

Silver can be separated from lead by:

Which of the following ligands is used to form the complex from which silver is extracted?

Which of the following reactions taking place in the blast furnace during extraction of iron is endothermic?

In the extraction of Fe from Fe2O3, the reducing agent is

Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature? (NEET 2021)

Blister copper is refined by stirring molten impure metal with green logs of wood because such a wood liberates hydrocarbon gases (like CH4). This Process X is called .......... and the metal contains impurities of Y …

The mineral carnallite contains

Sulphide ores of metals are usually concentrated by Froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching? (AIPMT 2007)

Which of the following is also known as “Fools gold”?

In the extraction of iron, Fe2O3 is reduced by

In the equation, 4M+8CN– + 2H2O + O2-> 4 [M(CN)2]– + 4OH–, the metal M is

Blister copper is obtained in

Which method of purification is represented by the following equation? Ti+2I TiI Ti+2I K K -> ->

Impure nickel is purified by

Which of the following mixtures is called matte?