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1
JEE Main 2021 (Online) 24th February Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Math List - I with List - II.

List I (Metal) List II (Ores)
(a) Aluminium (i) Siderite
(b) Iron (ii) Calamine
(c) Copper (iii) Kaolinite
(d) Zinc (iv) Malachite


Choose the correct answer from the options given below :
A
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
B
(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
C
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
D
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
2
JEE Main 2021 (Online) 24th February Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The major components in "Gun Metal” are :
A
Al, Cu, Mg and Mn
B
Cu, Ni and Fe
C
Cu, Sn and Zn
D
Cu, Zn and Ni
3
JEE Main 2021 (Online) 24th February Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following ore is concentrated using group 1 cyanide salt ?
A
Sphalerite
B
Malachite
C
Siderite
D
Calamine
4
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
The element that can be refined by distillation is :
A
gallium
B
nickel
C
zinc
D
tin
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