Which metal ion is present in Vitamin- B12?
1. Zinc
2. Calcium
3. Iron
4. Cobalt
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The compound having tetrahedral geometry is-
1.
2.
3.
4.
Spin only magnetic moment of the compound is
1.
2.
3.
4.
Which kind of isomerism is exhibited by octahedral Co(NH3)4Br2Cl?
1. Geometrical and ionization
2. Geometrical and optical
3. Optical and ionization
4. Geometrical only
Which pair of compounds is expected to show similar colour in aqueous medium?
1.
2.
3.
4.
decolourises on addition of excess KCN, the product is-
1.
2.
3.
4. CuCN
If the bond length of CO bond in carbon monoxide is 1.128 , then what is the value of CO bond length is ?
1. 1.15
2. 1.128
3. 1.72
4. 1.118
Among the following metal carbonyls, the C-O bond order is lowest in
1.
2.
3.
4.
Geometrical shapes of the complexes formed by the reaction of respectively, are
1. Octahedral, tetrahedral and square planar
2. Tetrahedral, square planar and octahedral
3. Square planar, tetrahedral and octahedral
4. Octahedral, square planar and octahedral
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The volume (in mL) of 0.1 M AgNO3 required for complete precipitation of chloride ions present in 30 mL of 0.01 M solution of [Cr(H2O)5Cl]Cl2, as silver chloride is close to
1. 4
2. 6
3. 20
4. 60