Isolation of El...

Only One Option Correct Type

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

Q. 

Ellingham diagram represents a graph of 

ΔG° vsT plot in the Ellingham diagram slopes down for the reaction.

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.

Which metal has a greater tendency to form metal oxide?

The main reaction occurring in blast furnace during the extraction of iron from haematite is

Consider the following reactions at 10000° C,

Then choose the correct statement from the following.

According to Ellingham diagrams the oxidation reaction of carbon and carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature?

The minimum voltage required to electrolyse alumina in the Hall-Heroult process is [Given, (Al₂O₃) = - 1520 kJ/mol and (CO₂) = 394 k J/mol]

Based on the given information (CaO) = - 604.2 kJ/mol and (Al₂O₃) = - 1582 kJ/mol, which of the following is feasible?

Matching List Type

Direction : 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 : Carbon is good reducing agent for sulphides.

Statement II : Carbon is poor reducing agent for iron oxide.

Statement I : Carbon can reduce Fe₂O₃ to Fe at a temperature below 983 K. 

Statement II : Iron has higher affinity toward oxygen than carbon.