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1
JEE Advanced 2016 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
The reagent(s) that can selectively precipitate S2- from a mixture of S2- and SO42- in aqueous solution is (are) :
A
CuCl2
B
BaCl2
C
Pb(OOCCH3)2
D
Na2[Fe(CN)5NO]
2
JEE Advanced 2015 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2

The pairs of ions where BOTH the ions are precipitated upon passing H2S gas in presence of dilute HCl, is(are)

A
Ba2+, Zn2+
B
Bi3+, Fe3+
C
Cu2+, Pb2+
D
Hg2+, Bi3+
3
JEE Advanced 2015 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2

The correct statements about Cr2+ and Mn3+ is(are) (Atomic numbers of Cr = 24 and Mn = 25)

A
Cr2+ is a reducing agent.
B
Mn3+ is an oxidizing agent.
C
both Cr2+ and Mn3+ exhibit d4 electronic configuration.
D
when Cr2+ is used as a reducing agent, the chromium ion attains d5 electronic configuration.
4
JEE Advanced 2014 Paper 1 Offline
MCQ (More than One Correct Answer)
+3
-0.75
Upon heating with Cu2S, the reagent(s) that give copper metal is/are
A
CuFeS2
B
CuO
C
Cu2O
D
CuSO4
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