Chemistry Question Bank

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

An element whose electronic configuration is 4s13d10. The possibility of element is

Which of the following statements is correct?

Which of the following is not correctly matched?

Silver is extracted from its native ore by:

Which of the following reactions does not occur in Bessemer converter in the extraction of copper from chalcopyrites?

During the process of electrolytic refining of copper, some metals present as impurity settle as ‘anode mud’. These are

Refining of impure copper with zinc impurity is to be done by electrolysis using electrodes as Cathode Anode

The methods chiefly used for the extraction of lead and tin from their ores are respective

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…

Which of the following pair of ores cannot be converted into corresponding metals by pyrometallurgy?

Formation of metallic copper from the sulphide ore in the commercial metallurgical process involves. (a) Cu S+ O Cu O+SO ; Cu O+C 2Cu+CO -> -> (b) Cu S O Cu O SO ; 2Cu O Cu S 6Cu SO -> -> (c) Cu S 2O CuSO ; CuSO C…

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)

Which of the following pairs of metals is purified by van Arkel method? (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)

Which of the following elements is present as the impurity to the maximum extent in the pig iron? (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)

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)