1. A complex  compound in which oxidation number of a metal is zero

a. Ni(CO)4

b. K4[Fe (CN)6]

c. K3[Fe (CN)6]

d. [Pt (NH4)4]

Correct Option: a


2. A ligand can be regorded as

a. Lewis base

b. Lewis acid

c. Bronsted base

d. Bronsted acid

Correct Option: a


3. Among the following meta carbonyl C- O bond order is lower in

a. V(CO)6-

b. [Mn (CO) 6]+

c. Fe(CO)5

d. Cr (CO)6

Correct Option: a


4. An octahedral complex is formed when

a. dsp2

b. sp2d2

c. d2 sp3

d. sp3

Correct Option: c


5. Number of bridging carbonyls in Co4 (CO)12

a. 6

b. 3

c. 5

d. 2

Correct Option: b


6. Total number of electrons in Mo (CO)6

a. 82

b. 18

c. 36

d. 54

Correct Option: b


7. Range of stretching frequency of  terminal carbonyl  in neutral metal carbonyl is

a. 1750 –1850

b. 1650—1450

c. below 2000

d. 1850—2150

Correct Option: d


8. Which statement is incorrect about metal carbonyl

a. all are diamegnatic

b. all are liquid at room temperature

c. all carbonyls decompose on heating

d. all are typical ionic compounds

Correct Option: d


9. In non bridged structure of Mn2 (CO) 10 bond distance between Mn— Mn

a. 2.71

b. 2.79

c. 1.79

d. 3.79

Correct Option: b


10. Bomd order of NO is

a. 3

b. 2.5

c. 1.5

d. 2

Correct Option: b


11. The liquid range for NaCl salt is

a. 120

b. 709

c. 801

d. 1000

Correct Option: b


12. The fused salts of alkali halide are ______ electrolytes

a. poor

b. none

c. Good

d. bad

Correct Option: c


13. The solution of metal in metal halide are deeply ___________

a. Colorless

b. non toxic

c. toxic

d. colored

Correct Option: d


14. The highest dielectric constant is _______

a. BrF3

b. HF

c. HCN

d. NH3

Correct Option: c


15. The acidic and basic character of solvent depends upon the nature of _____

a. Reacting specie

b. Reactant

c. Solvent

d. Product

Correct Option: a


16. CHCl3 is the example of solvent

a. Protic

b. emphoteric

c. aq.solvent

d. a protic

Correct Option: d


17. The dipole moment of polar Solvent is _______

a. negligible

b. nfinite

c. high

d. low

Correct Option: c


18. The value of dielectric constant of liq BrF3

a. 70

b. 80

c. 17

d. 6

Correct Option: b


19. The high solubility’s of certain salts liq SO2 are due to ______

a. Solvate formation

b. complex formation

c. redox react

d. inner formation

Correct Option: a 

20. Blue solutions of metals in liq, NH3 are

a. paramagnetic

b. Diamagnetic

c. Soluble

d. in soluble

Correct Option: a


21. The formula of laughing gas is _______

a. N2O

b. NO2

c. N2S

d. H2

Correct Option: a


22. In the amphoteric reactions of liq ammonia the colour of Zinc amide

a. White ppt

b. purple

c. brownish

d. Green

Correct Option: a


23. HF undergoes auto ionization to give H+ and _______

a. HF-3

b. HF+3

c. HF2-

d. HF

Correct Option: c


24. AlF3 is readily in soluble is HF but dissolves in addition of _____

a. Na F

b. CrF3

c. 3NaF3

d. CrF2

Correct Option: a


25. When liq SO2 undergoes auto ionization sulphite SO3-2 behave as

a. acid

b. solute

c. solvent

d. base

Correct Option: d


26. Dilute H2SO4 becomes more toxic because of it absorb in ______

a. skin

b. surface

c. solvent

d. surface

Correct Option: a


27. The value of Eo for Cu is _______

a. 0.7

b. -0.76 V

c. 0.0 V

d. -0.0 V

Correct Option: b


28. Pure liq SO2 is pure ______

a. insulator

b. liquid

c. conductor

d. Semiconductor

Correct Option: c


29. __________ is used as solvent is producer of TPA

a. HF

b. HCN

c. HCl


Correct Option: d


30. Kinetic stability deals……….of complex

a. Reactivity

b. Nature

c. Stabilization

d. bond

Correct Option: a


31. The relationship between 2nd order and half life period is

a. 1.5/ka

b. 1/ka

c. 0.693/k

d. 1.5/k

Correct Option: b


32. If free energy change is –ve the electron exchange relation will be

a. vigorous

b. imposible

c. fast

d. Slow

Correct Option: c


33. In anation reaction H2O is ……… ligand

a. Leaving

b. dangerious

c. entering

d. Neutral

Correct Option: c


34. [AlF6]3- is example of ……………..

a. anation

b. acid

c. Labile

d. inert

Correct Option: c

35. If energy of d-orbital contain at least one electron then complexes are

a. stable

b. unstable

c. Inert

d. Labile

Correct Option: c


36. Different ions will split up by different compounds to given of

a. Same density complexes

b. different density complexes

c. Different coloured complexes

d. Same coloured complexes

Correct Option: c


37. Ions which are produced from ligand are

a. cation

b. anion

c. neutral

d. complex ion

Correct Option: d


38. The number of dative bonds to the central metal ion is its

a. Dative number

b. complex number

c. Coordination number

d. oxidation number

Correct Option: c


39. Due to ligand action of splitting the color of transition metal compound, the change occurs at

a. s orbital

b. f-orbital

c. d-orbital

d. p-orbital

Correct Option: c


40. Ligands which can form two coordinate bonds from each ion or molecule to the transition metal ion are known as

a. dentate ligand

b. ligand ions

c. polydentade ligand

d. bidentate ligand

Correct Option: d


41. How many M—M bonds are present in [CpMo(CO3)]2

a. 8

b. 0

c. 1

d. 2

Correct Option: b


42. Which of following is the incorrect statement about Zeies Salt?

a. Zeies salt is diatomic

b. oxidation state of Pt is +2

c. Oxidation state of Pt is +1

d. All the Pt-Cl bond in Zeies is equal

Correct Option: d


43. Which of following complexes has highest oxidation state of metal?

a. Na2 [FeCO4]

b. k[MnO5]

c. Mn(CO)5Cl

d. MnO4

Correct Option: a


44. Which of following complex is in which organic ligand is having only bond with metal?

a. W (CH3)6

b. K[PtCl3(C2H4)]

c. Mn (CO)5Cl

d. H3PO4

Correct Option: a


45. Metal carbonyls have used extensively in _______ synthesis

a. Stereo specific

b. simple

c. complex

d. specific

Correct Option: a


46. Water gas is an important industrial fuel and source of _____

a. CH4

b. HCl

c. H2

d. O2

Correct Option: c


47. The frequency of Cr (CO)6 is ______

a. 5100

b. 2000

c. 1801

d. 2140

Correct Option: b


48. The most important x-acceptor ligand is _____

a. NO+

b. PCl3

c. PCl5

d. CO

Correct Option: d


49. The colour of [Fe (NO)(H2O)5]SO4 is

a. Brown red

b. purple

c. red

d. Brown black

Correct Option: d