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1
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
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
An atom has electronic configuration 1s2 2s2 2p6 3s2 3p6 3d3 4s2, you will place it in
A
fifth
B
fifteenth
C
second
D
third.
3
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.
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Which of the following statement is not correct?
A
La(OH)3 is less basic than Lu(OH)3.
B
In lanthanide series ionic radius of Lu+3 ion decreases.
C
La is actually an element of transition series rather lanthanides.
D
Atomic radius of Zn and Hf are same because of lanthanide contraction.
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