Isolation of El...

Only One Option Correct Type

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.

Flux is often added to remove impurities from an iron ore in a blast furnace. In the reaction slag and flux are

CaO + SiO₂ →CaSiO₃ 

The slag and the flux are

Froth flotation process is based on

Which one of the following ores is concentrated by chemical leaching method?

Which of the ore dressing process requires finest size of ore?

Wolframite(FeWO₄) impurities present in cassiterite (SnO₂) can be separated by the process of

In the metallurgical process, the flux used for removing acidic impurities is

Gravity method of ore concentration depends on

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 leaching?

The slag formed in the extraction of iron from haematite in the blast furnace is:

In the froth floatation process for benefaction of the ores, the ore particles float because

Matching List Type

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 Statements I and Statements II. Select the correct answer from the codes given below.

Q. 

Statement I : Cresol and aniline are froth stabilisers.

Statement II : Collectors enhance the non-wettability of the ore particles.