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1
JEE Main 2022 (Online) 26th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Refining using liquation method is the most suitable for metals with :

A
Low melting point
B
High boiling point
C
High electrical conductivity
D
Less tendency to be soluble in melts than impurities
2
JEE Main 2022 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Given below are two statements.

Statement I : Pig iron is obtained by heating cast iron with scrap iron.

Statement II : Pig iron has a relatively lower carbon content than that of cast iron.

In the light of the above statements, choose the correct answer from the options given below.

A
Both Statement I and Statement II are correct.
B
Both Statement I and Statement II are not correct.
C
Statement I is correct but Statement II is not correct.
D
Statement I is not correct but Statement II is correct.
3
JEE Main 2022 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

The compound(s) that is (are) removed as slag during the extraction of copper is :

(A) CaO

(B) FeO

(C) Al2O3

(D) ZnO

(E) NiO

Choose the correct answer from the options given below:

A
(C), (D) only
B
(A), (B), (E) only
C
(A), (B) only
D
(B) only
4
JEE Main 2022 (Online) 29th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Match List I with List II.

List-I
Ore
List-II
Composition
(A) Siderite (I) FeCO$$_3$$
(B) Malachite (II) CuCO$$_3$$ . Cu(OH)$$_2$$
(C) Sphalerite (III) ZnS
(D) Calamine (IV) ZnCO$$_3$$

Choose the correct answer from the options given below :

A
A-I, B-II, C-III, D-IV
B
A-III, B-IV, C-II, D-I
C
A-IV, B-III, C-I, D-II
D
A-I, B-II, C-IV, D-III
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