1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
The coordination number of central metal atom in a complex is determined by :
A
the number of ligands around a metal ion bonded by sigma bonds
B
the number of only anionic ligands bonded to the metal ion
C
the number of ligands around a metal ion bonded by sigma and pi- bonds both
D
the number of ligands around a metal ion bonded by pi-bonds
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Which base is present in RNA but not in DNA?
A
Uracil
B
Thymine
C
Guanine
D
Cytosine
3
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Coordination compound have great importance in biological systems. In this context which of the following statements is incorrect?
A
Chlorophylls are green pigments in plants and contains calcium
B
Carboxypeptidase – A is an enzyme and contains zinc
C
Cyanocobalamin is B12 and contains cobalt
D
Haemoglobin is the red pigment of blood and contains iron
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Which one of the following reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon?
A
Ethyl acetate
B
Butan -2-one
C
Acetamide
D
Acetic acid

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