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MDCAT Chemistry Chapter 11 S and P Block Elements Online Test MCQs With Answers
Question # 1
d-d transition cannot be shows by
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Cu+1
Sc+3
Zn+2
All
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Question # 2
Transition compounds which occur as tripositive ions have no
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4s-electron
3p-electron
3s-electron
2s-electron
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Question # 3
The oxidation state of transition elements is usually
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Variable
Single
Constant
Infinite
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Question # 4
Which ion has maximum number of unpaired electrons in 3d subshell and shows maximum paramagnetic behavior?
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Cr+3
Ni+2
Co+2
Fe+3
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Question # 5
TiCl4 is used as catalyst for manufacture of
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Sulphuric acid
Plastics
Ethanol
Tetraethyl lead
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Question # 6
Zine does not show variable oxidation state, because
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Its d-subshell is incomplete
Its d-subshell is complete
It is relatively soft metal
It has two electrons in outermost shell
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Question # 7
The number of unpaired electrons present in Fe ions is
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1
2
5
0
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Question # 8
The highest oxidation state of manganese is
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+7
-7
+6
+4
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Question # 9
D-block elements are also called
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Non-typical transition element
Outer transition elements
Abnormal transition elements
Inner transition
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Question # 10
Which of the following transition metal forms colourless compounds in +4 oxidation state?
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Ti
Cr
Cu
Zn
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Question # 11
Zn has
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Zero unpaired electrons
Three unpaired electrons
Five unpaired electrons
One paired electrons
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Question # 12
The energy difference of d-orbitals varies from
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Atom to atom
lon to ion
Electron to electron
proton to proton
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Question # 13
In [Ti (H2O)]3+ which colour is transmitted
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Yellow
Blue and red
Blue and yellow
red and yellow
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Question # 14
In the electronic configuration of Cr one electron from 4s sub-shell is transferred to 3d sub-shell because
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The 3d orbital is of lower energy than 4s
The half-filled d-subshell is more stable than 4 electrons having d-subshell
The 4s orbital is of equal energy to 3d orbital
6 unpaired electron make Cr more paramagnetic
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Question # 15
Which of the following is a non-typical transition element?
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Cr
Zn
Mn
Fe
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Question # 16
No of unpaired electrons are maximum in
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V+3
Mn+2
Fe+3
Cr+3
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Question # 17
Which of the following shows group IIIB
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Zn, Cd. Hg
Cu. Ag. Au
Sc. Y. La
Ni. Pd. Pt
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Question # 18
d-d transition cannot be observed in
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Cr
Cu
Mn
Zn
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Question # 19
Number of electrons involved in d-d transition of [Ti(H2O)6]+3
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1
3
2
4
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Question # 20
Stability of Cu-metal is due to filled of d-orbital
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Half
Completely
Partially
Quarterly
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