1
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. This is due to the formation of
A
Cr2(SO4)3
B
CrO$$_4^{2 - }$$
C
Cr2(SO3)3
D
CrSO4
2
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
For the four successive transition elements (Cr, Mn, Fe and Co), the stability of + 2 oxidation state will be there in which of the following order?
(At. nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)
A
Mn > Fe > Cr > Co
B
Fe > Mn > Co > Cr
C
Co > Mn > Fe > Cr
D
Cr > Mn > Co > Fe
3
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Which of the following carbonyls will have the strongest C $$-$$ O bond?
A
Mn(CO)6+
B
Cr(CO)6
C
V(CO)6$$-$$
D
Fe(CO)5
4
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Which of the following complex compounds will exhibit highest paramagnetic behaviour?
A
[Ti(NH3)6]3+
B
[Cr(NH3)6]3+
C
[Co(NH3)6]3+
D
[Zn(NH3)6]2+