Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : In an Ellingham diagram, the oxidation of carbon to carbon monoxide shows a negative slope with respect to temperature. Reason R : CO tends to get decomposed at higher temperature. In the light of the above statements, choose the correct answer from the options given below

A is correct but R is not correct

Both A and R are correct and R is the correct explanation of A

A is not correct but R is correct

(3) Both A and R are correct but R is NOT the correct explanation of A

Which one of the following statements is incorrect ?

van Arkel method is used to purify tungsten.

The malleable iron is prepared from cast iron by oxidising impurities in a reverberatory furnace.

Cast iron is obtained by melting pig iron with scrap iron and coke using hot air blast.

Boron and Indium can be purified by zone refining method.

Given below are two statements: Statement I: During Electrolytic refining, the pure metal is made to act as anode and its impure metallic form is used as cathode. Statement II: During the Hall-Heroult electrolysis process, purified Al 2 O 3 is mixed with Na 3 AlF 6 to lower the melting point of the mixture. In the light of the above statements, choose the most appropriate answer from the options given below:

Statement I is incorrect but Statement II is correct

Both Statement I and Statement II are incorrect

Statement I is correct but Statement II is incorrect

Both Statement I and Statement II are correct

In the extraction of copper, its sulphide ore is heated in a reverberatory furnace after mixing with silica to:

decrease the temperature needed for roasting of Cu 2 S

The reaction representing the Mond process for metal refining is ______

2 K Au ( CN ) 2 + Zn ⟶ Δ K 2 Zn ( CN ) 4 + 2 Au

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IMPORTANT

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The form of iron obtained from blast furnace is :

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Important Questions on General Principles and Processes of Isolation of Metals (Metallurgy)

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 8th January 2020 Shift 2>Q 13

Among the reactions

(a) - (d),

the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are:

(a)

C a O + S i O_{2} \to C a S i O_{3}

(b)

3 F e_{2} O_{3} + C O \to 2 F e_{3} O_{4} + C O_{2}

(c)

F e O + S i O_{2} \to F e S i O_{3}

(d)

F e O \to F e + \frac{1}{2} O_{2}

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 8th April 2019 Shift 2>Q 14

The Mond process is used for the:

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 8th April 2019 Shift 1>Q 15

With respect to an ore, Ellingham diagram helps to predict the feasibility of its

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 7th January 2020 Shift 2>Q 16

The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 7th January 2020 Shift 1>Q 17

The purest form of commercial iron is:

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 6th April 2014>Q 18

Which series of reactions correctly represents the chemical relations related to iron and its compound?

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 6 September 2020 Shift 2>Q 19

For a reaction $4 M (s) + {nO}_{2} (g) \to 2 M_{2} O_{n} (s)$

The free energy change is plotted as a function of temperature. The temperature below which the oxide is stable could be inferred from the plot as the point at which :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 6 September 2020 Shift 2>Q 20

The element that can be refined by distillation is :

The form of iron obtained from blast furnace is :

Important Questions on General Principles and Processes of Isolation of Metals (Metallurgy)

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