1
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Nickel (Z = 28) combines with a uninegative monodentate ligand X to form a paramagnetic complex [NiX4]2− . The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively
A
one, tetrahedral
B
two, tetrahedral
C
one, square planar
D
two, square planar
2
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
In Fe(CO)5, the Fe – C bond possesses :
A
π-character only
B
both $$\sigma$$ and π characters
C
ionic character
D
$$\sigma$$-character
3
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The pyrimidine bases present in DNA are
A
cytosine and adenine
B
cytosine and guanine
C
cytosine and thymine
D
cytosine and uracil
4
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces
A
4-phenylcyclopentene
B
2-phenylcyclopentene
C
1-phenylcyclopentene
D
3-phenylcyclopentene

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