JKCET SERIES Chemistry
D Block Elements
14 previous year questions.
Volume: 14 Ques
Yield: Medium
High-Yield Trend
1
2018 1
2017 1
2015 3
2014 1
2011 1
2010 1
2009 1
2008 2
2007 2
2002 Chapter Questions 14 MCQs
01
PYQ 2002
medium
chemistry ID: jkcet-20
Which of the following has maximum unpaired electrons?
1
Scandium
2
Chromium
3
Manganese
4
Iron
02
PYQ 2002
medium
chemistry ID: jkcet-20
Which of the following oxidation states is common for all lanthanides ?
1
2
2
5
3
3
4
4
03
PYQ 2007
medium
chemistry ID: jkcet-20
The colour of transition metal ions is due to presence of unpaired electron transitions in available empty electron in
1
orbitals
2
orbitals
3
orbitals
4
and -orbitals
04
PYQ 2007
medium
chemistry ID: jkcet-20
Lanthanides and actinides are also called as
1
short periods
2
inner-transition elements
3
long periods
4
main transition elements
05
PYQ 2008
medium
chemistry ID: jkcet-20
Differentiating electron in inner transition elements enters the ......... orbital.
1
s
2
p
3
d
4
f
06
PYQ 2009
medium
chemistry ID: jkcet-20
Which one of the following is block element?
1
Gd
2
Hs
3
Es
4
Cs
07
PYQ 2010
medium
chemistry ID: jkcet-20
German silver is an alloy of
1
copper, zinc and silver
2
copper, zinc and nickel
3
copper, zinc and tin
4
manganese, chromium and nickel
08
PYQ 2011
medium
chemistry ID: jkcet-20
When 'blue vitriol' is heated at , the product formed is
1
2
3
4
09
PYQ 2014
medium
chemistry ID: jkcet-20
What elements are present in block series?
1
Lanthanoids
2
Actinoids
3
Lanthanoids and actinoids
4
Lipids
10
PYQ 2014
medium
chemistry ID: jkcet-20
Why -block element form complexes?
1
Due to large size and high nuclear charge
2
Due to small size and low nuclear charge
3
Due to small size and high nuclear charge
4
None of the above
11
PYQ 2014
medium
chemistry ID: jkcet-20
The colour of transition metal compound is due to
1
complete ns subshell
2
small size metal ions
3
incomplete subshell
4
absorption of light in region
12
PYQ 2015
medium
chemistry ID: jkcet-20
In an acidified aqueous solution of and ions, gas was passed. Precipitates are
1
MnS and CuS
2
NiS and HgS
3
MnS and NiS
4
CuS and HgS
13
PYQ 2017
medium
chemistry ID: jkcet-20
Which of the following elements involves gradual filling of -levels?
1
Lanthanides
2
Actinides
3
Transition metals
4
Coinage metals
14
PYQ 2018
medium
chemistry ID: jkcet-20
How many electrons are involved during the oxidation reaction of in acidic medium ?
1
2
3
4