Chemistry Question Bank

Which one is malachite from the following? (NEET 2019)

In the extraction of copper from its sulphide ore, the metal is formed by the reduction of Cu₂O with (JIPMER 2018)

In Cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents are respectively. (JIPMER 2017)

Match items of Column I with the items of Column II and assign the correct code : (NEET-I 2016) Column I Column II

In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with (NEET 2016)

Which one is malachite from the following? (NEET 2015) (a) 2 Cu OH (b) Fe O (c) CuCO .Cu OH (d) CuFeS

The ore of aluminium is (UP CPMT 2013)

The metal oxide which cannot be reduced to metal by carbon is (Karnataka NEET 2013)

Roasting of sulphides give the gas X as a by-product. This is a colourless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic…

Identify the ore not containing iron. (UP CPMT 2012)

Aluminium is extracted from alumina (Al₂O₃) by electrolysis of a molten mixture of (AIPMT 2012)

In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with? (AIPMT 2012)

The correct order of the abundance of the elements in earth’s crust is (AIMPT 2011)

The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag. (AIPMT 2011)

Cupellation process is used in the metallurgy of: (AIPMT 2011)

Which of the following diagram explain extraction of metal from metal oxide: (RPMT 2010)

The minimum voltage required to electrolyse alumina in the Hall-Heroult process is (Given, o f G Al O 1520kJ mol ; o f G CO 394kJmol ) (AIIMS 2009)

In the cryolite CaCl₂ is added to: (AIPMT 2009)

The process of extracting Ti from TiCl₄ in presence of Mg is called: (RPMT 2009)

In the extraction of silver, Ag₂S is dissolved in: (AIPMT 2009)

Which metal has a greater tendency to form metal oxide? (RPMT 2008)

Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true? (RPMT 2007)

Blister copper is: (AIPMT 2007)

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)

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 →