Isolation of El...

Only One Option Correct Type

Direction (Q. Nos. 1-9) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

Q.

Which of the following is not correctly matched ?

In Mac Arthur Forest method, silver is extracted from the solution of Na[Ag(CN)₂] by the use of

In the extraction of copper, the metal formed in the Bessem er’s convertor is due to the reaction

The nitrate of which metal leaves metallic globule on strongly heating ?

In the extraction of gold, the cyanide solution acts as a

The matte is impure substance obtained during the extraction of

During the extraction of gold the following reactions takes place
  Au + CN^- + H₂O  X,

X + Zn → Y + Au

Identify the reaction that does not take place in a blast furnace

Roasting of sulphides gives the gas X as a byproduct. 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, acts as reducing agent and its acid is never isolated. The gas X is

Matching List Type

Direction (Q. Nos. 10 and 11) 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 from the codes given below.

Match the Column I with Column II and mark the correct option from the codes given below.

Statement Type

Direction : This section is based on Statement I and Statement II. Select the correct answer from the codes given below.

Q. 

Statement I : Cast iron is obtained by remelting pig iron with scrap iron and coke wing hot air blast.
Statement II : In the extraction of silver, silver is extracted as cationic complex.