1
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
The reaction of aqueous KMnO4 with H2O2 in acidic conditions gives
A
Mn4+ and O2
B
Mn2+ and O2
C
Mn2+ and O3
D
Mn4+ and MnO2
2
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
Magnetic moment 2.83 BM is given by which of the following ions?
(At. nos. Ti = 22, Cr = 24, Mn = 25, Ni = 28)
A
Ti3+
B
Ni2+
C
Cr3+
D
Mn2+
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
Sc (Z = 21) is a transition element but Zn (Z = 30) is not because
A
both Sc3+ and Zn2+ ions are colourless and form white compounds.
B
in case of Sc, 3d orbitals are partially filled but in Zn these are filled.
C
last electron is assumed to be added to 4s level in case of Zn.
D
both Sc and Zn do not exhibit variable oxidation states.
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following lanthanoid ions is diamagnetic?
(At. nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)
A
Eu2+
B
Yb2+
C
Ce2+
D
Sm2+
NEET Subjects
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