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)
The maximum temperature that can be achieved in blast furnace is: (NEET 2021)
Identify the correct statement from the following: (NEET 2020)
Which of the following pair of ores cannot be converted into corresponding metals by pyrometallurgy?
Identify the incorrect statement. (Odisha NEET 2019)
Which of the following has maximum iron content? (AIIMS 2019)
The two most abundant metals in the earth crust are:
Which one is malachite from the following? (NEET 2019)
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with (NEET 2016)
Match items of Column I with the items of Column II and assign the correct code : (NEET-I 2016) Column I Column II
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)
Identify the incorrect statement. (NEET Odisha 2015)
The process of converting hydrated alumina into anhydrous alumina is called (AIPMT 2013)
In Cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents are respectively. (JIPMER 2017)
Identify the ore not containing iron. (UP CPMT 2012)
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…
Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of (AIPMT 2012)
Consider the following metallurgical processes: (I) Heating impure metal with CO and distilling the resulting volatile carbonyl (b.p. 430C) and finally decomposition at 1500-2000C to get the pure metal (II) Heating th…
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with? (AIPMT 2012)
The metal oxide which cannot be reduced to metal by carbon is (Karnataka NEET 2013)
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of Cu2O with (JIPMER 2018)
The solubility of CaCO3 is 7 mg/L. Calculate the solubility product of BaCO3 from this information and from the fact that when Na2CO3 is added slowly to a solution containing equimolar concentration …
The solubility of AgCl is maximum in
The solubility of LiOH in a solution with pH = 8 is (Ksp = 1.8 × 10–12)