19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature? (NEET 2021)
Identify the incorrect statement. (Odisha NEET 2019)
Which of the following has maximum iron content? (AIIMS 2019)
Which one is malachite from the following? (NEET 2019)
Select correct statement:
In Cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents are respectively. (JIPMER 2017)
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of Cu2O with (JIPMER 2018)
Identify the correct statement from the following: (NEET 2020)
Match items of Column I with the items of Column II and assign the correct code : (NEET-I 2016) Column I Column II
The ore of aluminium is (UP CPMT 2013)
Identify the incorrect statement. (NEET Odisha 2015)
The process of converting hydrated alumina into anhydrous alumina is called (AIPMT 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…
The metal oxide which cannot be reduced to metal by carbon is (Karnataka NEET 2013)
Which one is malachite from the following? (NEET 2015) (a) 2 Cu OH (b) Fe O (c) CuCO .Cu OH (d) CuFeS
Identify the ore not containing iron. (UP CPMT 2012)
The correct order of the abundance of the elements in earth’s crust is (AIMPT 2011)
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with? (AIPMT 2012)
Which of the following pairs of metals is purified by van Arkel method? (AIPMT 2011)
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with (NEET 2016)
Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly
Which of the following elements is present as the impurity to the maximum extent in the pig iron? (AIPMT 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)
Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of (AIPMT 2012)
Cupellation process is used in the metallurgy of: (AIPMT 2011)