Test: Metallurgy of Some Important Metals (Cu, Fe & Ag) (Old NCERT) - JEE MCQ

Which of the following has lowest carbon content?

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

2CuCO₃ . Cu(OH)₂ is the formula of

The temperature of the slag zone in the metallurgy of iron using blast furnace is

The Puddler’s candles are produced due to the burning of

In the extraction of copper, the metal formed in the Bessemers convertor is due to the reaction

Native silver metal forms a water soluble complex with a dilute aqueous solution of NaCN in the presence of

One or More than One Options Correct Type

Direction (Q. Nos. 11-15) This section contains 5 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Q. 

Which one of the following reactions, take place during the extraction of iron?

Annealing improves

The statements that are correct among the given are

Which of the following process is not based on the formation of complex compounds ?

Which of the following are white in colour?

Comprehension Type

Direction (Q. Nos. 16-17) This section contains a paragraph, describing theory, experiments, data, etc.
Two questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

Passage

Steel is the most important commercial variety of iron. The % of carbon in this form of iron is midway between that of cast iron and wrought iron i.e. 0.25 to 2 %.
There are many varieties of steel depending on the amount of carbon present in it such as mildj^teels, hard steels and special steels. Steel mixed with small amount of Ni, Co, Cr, W, Mo, Mn etc., acquire special properties. Such products are called alloy steels.

Q. 

Which of the following is used to make permanent magnets?

Passage

Steel is the most important commercial variety of iron. The % of carbon in this form of iron is midway between that of cast iron and wrought iron i.e. 0.25 to 2 %.
There are many varieties of steel depending on the amount of carbon present in it such as mild steels, hard steels and special steels. Steel mixed with small amount of Ni, Co, Cr, W, Mo, Mn etc., acquire special properties. Such products are called alloy steels.

Q. 

Steel used in making pendulums, measuring tapes

Matching List Type

Direction (Q. No. 18 and 19) Choices for the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

Q. 

Match the Column I with Column II and mark the correct option code.

Match the Column I with Column II and mark the correct option code.

One Integer Value Correct Type

Direction (Q. Nos. 20-24) This section contains 5 questions. When worked out will result is an integer from 0 to 9 (both inclusive).

Q. 

The percentage of copper in duralumin is

The percentage of silver in German silver is

Mohr’s salt is a double salt with the formula FeSO₄(NH₄)₂SO₄xH₂O. Here, value of x is

Number of unpaired electrons in the complex [Ag(CN)₂]^- are

The number of silver containing compounds among Nessler’s reagent, Tollen’s reagent, Baeyer’s reagent, Corrosive sublimate, Horn silver, Ruby silver, Calomel.

Statement Type

Direction (Q. No. 25) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.

Q. 

Statement I : Silver is obtained from its cyanide complex during leaching.

Statement II : Copper can be extracted by poling process when it contain Cu₂O as impurities.