1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
The correct order of ionic radii of Y3+, La3+, Eu3+ and Lu3+ is
(Atomic nos. Y = 39, La = 57, Eu = 63, Lu = 71)
A
Y3+ < La3+ < Eu3+ < Lu3+
B
Y3+ < Lu3+ < Eu3+ < La3+
C
Lu3+ < Eu3+ < La3+ < Y3+
D
La3+ < Eu3+ < Lu3+ < Y3+
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
General electronic configuration of lanthanides is
A
$$\left( {n - 2} \right){f^{1 - 14}}\,\left( {n - 1} \right){s^2}{p^6}{d^{0 - 1}}\,n{s^2}$$
B
$$\left( {n - 2} \right){f^{0 - 14}}\,\left( {n - 1} \right){d^{0 - 1}}\,n{s^2}$$
C
$$\left( {n - 2} \right){f^{0 - 14}}\,\left( {n - 1} \right){d^{10}}\,n{s^2}$$
D
$$\left( {n - 2} \right){d^{0 - 1}}\left( {n - 1} \right)\,{f^{1 - 14}}\,n{s^2}$$
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Which of the following shows maximum number of oxidation states?
A
Cr
B
Fe
C
Mn
D
V
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Zn gives H2 gas with H2SO4 and HCl but not with HNO3 because
A
Zn act as oxidising agent when react with HNO3
B
HNO3 is weaker acid than H2SO4 and HCl
C
In electrochemical series Zn is above hydrogen
D
NO$$_3^ - $$ is reduced in preference to hydronium ion.
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