Match List-I with List-II : List-I (Name of ore/mineral) List-I (Chemical formula) a Calamine i ZnS b Malachite ii FeCO 3 c Siderite iii ZnCO 3 d Sphalerite iv CuCO 3 · Cu ( OH ) 2 Choose the most appropriate answer from the options given below :

( a ) -( iii ), ( b ) -( iv ),( c )-( ii ),( d )-( i )

( a ) - ( iv ) , ( b ) - ( iii ) , ( c ) - ( i ) , ( d ) - ( ii )

( a ) - ( iii ) , ( b ) - ( ii ) , ( c ) - ( iv ) , ( d ) - ( i )

( a ) -( iii ),( b )-( iv ),( c )-( i ),( d )-( ii )

Match List- I with List- II . List- I List- II (a) Siderite (i) Cu (b) Calamine (ii) Ca (c) Malachite (iii) Fe (d) Cryolite (iv) Al (v) Zn Choose the correct answer from the options given below:

a → iii , b → v , c → i , d → iv

a → iii , b → i , c → v , d → ii

a → i , b → ii , c → v , d → iii

a → i , b → ii , c → iii , d → iv

Match List- I with List- II . List- I (Ore) List- II (Element Present) a Kernite p Tin b Cassiterite q Boron c Calamine r Fluorine d Cryolite s Zinc Choose the most appropriate answer from the options given below:

a → q , b → p , c → s , d → r

a → r , b → p , c → q , d → s

a → q , b → s , c → p , d → r

a → p , b → r , c → s , d → q

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

MEDIUM

JEE Main

IMPORTANT

Earn 100

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of ${Al}_{2} O_{3}$ with cryolite.
Reason (R) : The oxidation state of $Al$ in cryolite is $+ 3 .$
In the light of the above statements, choose the most appropriate answer from the options given below :

50% studentsanswered this correctly

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 - 27 July 2021 Shift 2>Q 28

The addition of silica during the extraction of copper from its sulphide ore :-

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 - 27 July 2021 Shift 1>Q 29

The statement that is

INCORRECT

about Ellingham diagram 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 - 27 August 2021 Shift 2>Q 30

Match List-I with List-II :

	List-I (Name of ore/mineral)		List-I (Chemical formula)
a	Calamine	i	$ZnS$
b	Malachite	ii	${FeCO}_{3}$
c	Siderite	iii	${ZnCO}_{3}$
d	Sphalerite	iv	${CuCO}_{3} \cdot Cu (OH)_{2}$

Choose the most appropriate 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 - 27 August 2021 Shift 1>Q 31

Which refining process is generally used in the purification of low melting metals?

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 - 26 Feb 2021 Shift 2>Q 32

Match List- $I$ with List- $II$ .

List- $I$		List- $II$
(a)	Siderite	(i)	$Cu$
(b)	Calamine	(ii)	$Ca$
(c)	Malachite	(iii)	$Fe$
(d)	Cryolite	(iv)	$Al$
		(v)	$Zn$

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 - 26 Feb 2021 Shift 1>Q 33

Match List- $I$ with List- $II$ .

	List- $I$ (Ore)		List- $II$ (Element Present)
$(a)$	Kernite	$(p)$	Tin
$(b)$	Cassiterite	$(q)$	Boron
$(c)$	Calamine	$(r)$	Fluorine
$(d)$	Cryolite	$(s)$	Zinc

Choose the most appropriate answer from the options given below:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 26 August 2021 Shift 2>Q 34

Given below are two statements:
Statement I : Sphalerite is a sulphide ore of zinc and copper glance is a sulphide ore of copper.
Statement II : It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using 'depressants' in a froth flotation method.
Choose the most appropriate answer from the options given below :

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - General Principles and Processes of Isolation of Metals (Metallurgy)>JEE Main - 26 August 2021 Shift 1>Q 35

Given below are two statements.
Statement I: The choice of reducing agents for metals extraction can be made by using the Ellingham diagram, a plot of $Δ G$ vs temperature.
Statement II: The value of $ΔS$ increases from left to right in the Ellingham diagram.

In the light of the above statements, choose the most appropriate answer from the options given below:

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

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