Consider two chemical reactions (A) and (B) that take place during metallurgical process: (A) ZnCO 3 s ⟶ Δ ZnO s + CO 2 g (B) 2 ZnS s + 3 O 2 g ⟶ Δ 2 ZnO s + 2 SO 2 g The correct option of names given to them respectively is:

(A) is calcination and (B) is roasting

Both (A) and (B) are producing same product so both are roasting

Both (A) and (B) are producing same product so both are calcination

(A) is roasting and (B) is calcination

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

EASY

JEE Main

IMPORTANT

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Which of the following ore is concentrated using group $1$ cyanide salt?

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

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 - 24 Feb 2021 Shift 1>Q 42

${Al}_{2} O_{3}$ was leached with alkali to get $X .$ The solution of $X$ on passing of gas $Y,$ forms $Z .$

$X, Y$ and $Z$ respectively are

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 - 22 July 2021 Shift 1>Q 43

Sulphide ion is soft base and its ores are common for metals

$(a) Pb (b) Al (c) Ag (d) Mg$

Choose the correct answer from the options given below

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 - 20 July 2021 Shift 2>Q 44

Consider two chemical reactions (A) and (B) that
take place during metallurgical process:
(A)

{ZnCO}_{3 (s)} \overset{Δ}{⟶} {ZnO}_{(s)} + {CO}_{2 (g)}

(B)

2 {ZnS}_{(s)} + 3 O_{2 (g)} \overset{Δ}{⟶} 2 {ZnO}_{(s)} + 2 {SO}_{2 (g)}

The correct option of names given to them respectively is:

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 - 2 September 2020 Shift 2>Q 45

Cast iron is used for the manufacture of :

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 - 19th April 2014>Q 46

Which one of the following ores is known as Malachite:

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 - 16th April 2018>Q 47

In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with:

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 - 12th January 2019 Shift 2>Q 48

The pair that does not require calcination is

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 - 12th January 2019 Shift 1>Q 49

In the Hall-Heroult process, aluminium is formed at the cathode. The cathode is made out of:

Which of the following ore is concentrated using group 1 cyanide salt?

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

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Which of the following ore is concentrated using group $1$ cyanide salt?