Quiz_+D-Block+elements+and+coordination+compounds,+2021.pdf

This is highly required for self study

1. Quiz: D-Block elements and
coordination compounds, 2021

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IT'S QUIZ TIME

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And enter the code
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12. The 3d transition series contains elements having atomic number
from
a.21 to 30
b.21 to 31
c.22 to 30
d.21 to 29

13. The 3d transition series contains elements having atomic number
from
a.21 to 30
b.21 to 31
c.22 to 30
d.21 to 29

14. Transition metals are generally coloured because
a.they absorb electromagnetic radiations
b.their penultimate d-subshells are fully filled
c.of d-d transition
d.none of the above

15. Transition metals are generally coloured because
a.they absorb electromagnetic radiations
b.their penultimate d-subshells are fully filled
c.of d-d transition
d.none of the above

16. Atomic radii of d-block elements in a series
a.decreases with increase in atomic number
b.increases with increase in atomic number
c.First decreases then remains constant and then increases
d.none of the above

17. Atomic radii of d-block elements in a series
a.decreases with increase in atomic number
b.increases with increase in atomic number
c.First decreases then remains constant and then increases
d.none of the above

18. Paramagnetism is common in
a.s-block elements
b.p-block elements
c.d-block elements
d.any of them

19. Paramagnetism is common in
a.s-block elements
b.p-block elements
c.d-block elements
d.any of them

20. Transition metals is complexes act as
a.Lewis acid
b.Lewis base
c.Neutral
d.none of the above

21. Transition metals is complexes act as
a.Lewis acid
b.Lewis base
c.Neutral
d.none of the above

22. Transition elements exhibit variable valency because they release
electrons from
a.ns orbitals
b.np orbitals
c.(n-1)d orbitals
d.(n-1)d & ns orbitals

23. Transition elements exhibit variable valency because they release
electrons from
a.ns orbitals
b.np orbitals
c.(n-1)d orbitals
d.(n-1)d & ns orbitals

24. Complex ion/Compound having only two stereoisomers:
a.[Cr Br
2
(H
2
O) (NH
3
)
3
]
b.[Zn (gly)
2
]
c.[Pt Br Cl (CN)(H
2
O)]
-
d.[Co (en) (NH
3
)
4
]
3+

25. Complex ion/Compound having only two stereoisomers:
a.[Cr Br
2
(H
2
O) (NH
3
)
3
]
b.[Zn (gly)
2
]
c.[Pt Br Cl (CN)(H
2
O)]
-
d.[Co (en) (NH
3
)
4
]
3+

26. Which of the following is not optically active?
a.[Co(en)
3
]
+
b.[Cr(Ox)
3
]
3-
c.cis-[CoCl
2
(en)
2
]
+
d.trans-[CoCl
2
(en)
2
]
+

27. Which of the following is not optically active?
a.[Co(en)
3
]
+
b.[Cr(Ox)
3
]
3-
c.cis-[CoCl
2
(en)
2
]
+
d.trans-[CoCl
2
(en)
2
]
+

28. The species which has 4 unpaired electrons is:
a.[Co(CN)
6
]
4-

b.[Cr(H
2
O)
6
]
3+

c.[FeCl
4
]
2-

d.[Fe(H
2
O)
6
]
3+

29. The species which has 4 unpaired electrons is:
a.[Co(CN)
6
]
4-

b.[Cr(H
2
O)
6
]
3+

c.[FeCl
4
]
2-

d.[Fe(H
2
O)
6
]
3+

30. The structure of K[PtCl
3
(C
2
H
4
)] and hybridization of Pt respectively
are:
a.Square planar, sp
2
d
2
b.Square planar, d sp
2
c.Tetrahedral, sp
3
d.Octahedral, d
2
sp
3

31. The structure of K[PtCl
3
(C
2
H
4
)] and hybridization of Pt respectively
are:
a.Square planar, sp
2
d
2
b.Square planar, d sp
2
c.Tetrahedral, sp
3
d.Octahedral, d
2
sp
3

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