19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The metal which mainly occurs as oxide ore in nature is:
Among the following, the most abundant metal in the earth’s crust is
The impurities present in a mineral are called
Which of the following statements is correct?
The metal which is extracted by electrolytic reduction is
Which of the following minerals does not contain iron?
The maximum temperature that can be achieved in blast furnace is: (NEET 2021)
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature? (NEET 2021)
Identify the correct statement from the following: (NEET 2020)
Which of the following has maximum iron content? (AIIMS 2019)
Identify the incorrect statement. (Odisha NEET 2019)
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
Copper is extracted from sulphide ore using the method:
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
Identify the incorrect statement. (NEET Odisha 2015)
The ore of aluminium is (UP CPMT 2013)
The process of converting hydrated alumina into anhydrous alumina is called (AIPMT 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)