1
JEE Advanced 2019 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1
Change Language
Calamine, malachite, magnetic and cryolite, respectively, are
A
ZnCO3, CuCO3, Fe2O3, Na3AlF6
B
ZnSO4, CuCO3, Fe2O3, AlF3
C
ZnSO4, Cu(OH)2, Fe3O4, Na3AlF6
D
ZnCO3, CuCO3.Cu(OH)2, Fe3O4, Na3AlF6
2
JEE Advanced 2015 Paper 1 Offline
MCQ (Single Correct Answer)
+8
-4
Match the anionic species given in Column-I that are present in the ore(s) given in Column-II
Column - I Column - II
(A) Carbonate (p) Siderite
(B) Sulphide (q) Malachite
(C) Hydroxide (r) Bauxite
(D) Oxide (s) Calamine
(t) Argentite
A
(A) $$\to$$ p,q,s; (B) $$\to$$ t; (C) $$\to$$ q,r; (D) $$\to$$ r
B
(A) $$\to$$ s; (B) $$\to$$ s,t; (C) $$\to$$ r; (D) $$\to$$ r,s
C
(A) $$\to$$ p,s; (B) $$\to$$ s,t; (C) $$\to$$ r; (D) $$\to$$ s
D
(A) $$\to$$ p,q,s; (B) $$\to$$ s,t; (C) $$\to$$ p,r; (D) $$\to$$ t
3
JEE Advanced 2013 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-0.75
Sulphide ores are common for the metals
A
Ag, Cu and Pb
B
Ag, Mg and Pb
C
Ag, Cu and Sn
D
Al, Cu and Pb
4
IIT-JEE 2012 Paper 2 Offline
MCQ (Single Correct Answer)
+2
-0.5
In the cyanide extraction process of silver from argentite ore, the oxidising and reducing agents used are
A
O2 and CO respectively
B
O2 and Zn dust respectively
C
HNO3 and Zn dust respectively
D
HNO3 and CO respectively
JEE Advanced Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12