This chapter is currently out of syllabus
1
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Extraction of gold and silver involves leaching with CN$$-$$ ion. Silver is later recovered by
A
distillation
B
zone refining
C
displacement with Zn
D
liquation
2
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Match items of Column I with the items of Column II and assign the correct code :
Column $${\rm I}$$ Column $${\rm I}$$$${\rm I}$$
(A) Cyanide process (i) Ultrapure Ge
(B) Froth floatation process (ii) Dressing of ZnS
(C) Electrolytic reduction (iii) Extraction of Al
(D) Zone refining (iv) Extraction of Au
(v) Purification of Ni
A
(A) $$ \to $$ (i);  (B) $$ \to $$ (ii);  (C) $$ \to $$ (iii);  (D) $$ \to $$ (iv)
B
(A) $$ \to $$ (iii);  (B) $$ \to $$ (iv);  (C) $$ \to $$ (v);  (D) $$ \to $$ (i)
C
(A) $$ \to $$ (iv);  (B) $$ \to $$ (ii);  (C) $$ \to $$ (iii);  (D) $$ \to $$ (i)
D
(A) $$ \to $$ (ii);  (B) $$ \to $$ (iii);  (C) $$ \to $$ (i);  (D) $$ \to $$ (v)
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In the extraction of copper from its sulphide ore. the metal is finally obtained by the reduction of cuprous oxide with
A
carbon monoxide
B
copper (I) sulphide
C
sulphur dioxide
D
iron (II) sulphide.
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
''Metals are usually not found as nitrates in their ores.'' Out of the following two (I and II) reasons which is/are true for the above observation?
I.  Metal nitrates are highly unstable.
II.  Metal nitrates are highly soluble in water.
A
I is false but II is true.
B
I is true but II is false.
C
I and II are true.
D
I and II are false
NEET Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12