NEET-UG SERIES Chemistry
Classification Of Elements And Periodicity In Properties
22 previous year questions.
Volume: 22 Ques
Yield: High
High-Yield Trend
1
2022 1
2018 1
2012 1
2011 2
2010 2
2007 1
2006 2
2005 2
2003 1
2001 1
1998 1
1996 5
1993 1
1988 Chapter Questions 22 MCQs
01
PYQ 1988
medium
chemistry ID: neet-ug-
The spectrum of helium is expected to be similar to that of
1
H
2
Na
3
4
02
PYQ 1993
medium
chemistry ID: neet-ug-
If the atomic number of an element is 33, it will be placed in the periodic table in the
1
first group
2
third group
3
fifteen group
4
seventh group
03
PYQ 1993
medium
chemistry ID: neet-ug-
are isoelectronic. The order of their ionic size is
1
2
3
4
04
PYQ 1993
easy
chemistry ID: neet-ug-
Which electronic configuration of an element has abnormally high difference between second and third ionisation energy?
1
1s
2
3
4
05
PYQ 1993
medium
chemistry ID: neet-ug-
One of the characteristic properties of non-metals is that they
1
are reducing agents
2
form basic oxides
3
form cations by electron gain
4
are electronegative
06
PYQ 1993
medium
chemistry ID: neet-ug-
In the periodic table from left to right in a period, the atomic volume
1
decreases
2
increases
3
remains same
4
first decrease then increases
07
PYQ 1996
medium
chemistry ID: neet-ug-
Which one of the following ions will be smallest in size?
1
Na
2
Mg
3
F
4
08
PYQ 1998
medium
chemistry ID: neet-ug-
The first ionisation potential (in eV) of Be and B, respectively are
1
8.29, 9.32
2
9.32, 9.32
3
8.29, 8.29
4
9.32, 8.29
09
PYQ 2001
easy
chemistry ID: neet-ug-
Correct order of 1st ionisation potential (IP) among following elements Be, B, C, N, O is
1
B < Be < C < O < N
2
B < Be < C < N < 0
3
Be < B < C < N < O
4
Be < B < C < O < N
10
PYQ 2003
medium
chemistry ID: neet-ug-
The ions and are
isoelecronic. Their ionic radii show :
1
An increase from to and then decrease from to
2
An decrease from to and then increase from to
3
A significant increase from to
4
A significant decrease from to
11
PYQ 2003
medium
chemistry ID: neet-ug-
The ions , , , and are isoelectronic. Their ionic radii show:
1
A significant increase from to
2
A significant decrease from to
3
An increase from to and then decrease from to
4
An decrease from to and then increase from to
12
PYQ 2005
hard
chemistry ID: neet-ug-
Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?
1
Cl < F < S < O
2
O < S < F < CI
3
S < O < Cl < F
4
F < CI < O < S
13
PYQ 2005
hard
chemistry ID: neet-ug-
A nuclide of an alkaline earth metal undergoes radioactive decay by emission of three αparticles in succession.The group of the periodic table to which the resulting daughter element would belong is:
1
Group 14
2
Group 16
3
Group 4
4
Group 6
14
PYQ 2006
easy
chemistry ID: neet-ug-
Which one of the following orders is not in accordance with the property stated against it?
15
PYQ 2007
medium
chemistry ID: neet-ug-
Identify the correct order of the size of the following.
1
2
3
4
16
PYQ 2007
easy
chemistry ID: neet-ug-
With which of the following electronic configuration of an atom has the lowest ionisation enthalpy?
1
2
3
4
17
PYQ 2010
medium
chemistry ID: neet-ug-
Among the following which one has the highest cation to anion size ratio?
1
CsF
2
LiF
3
NaF
4
CsI
18
PYQ 2010
medium
chemistry ID: neet-ug-
Among the elements and , the order of increasing atomic radii is -
1
Cl < P < Mg < Ca
2
P < Cl < Ca < Mg
3
Ca < Mg < P < Cl
4
Mg < Ca < Cl < P
19
PYQ 2011
easy
chemistry ID: neet-ug-
What is the value of electron gain enthalpy of if of ?
1
+ 10.2 eV
2
-5.1 eV
3
-10.2 eV
4
+ 2.55 eV
20
PYQ 2012
easy
chemistry ID: neet-ug-
Identify the wrong statement in the following.
1
Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius
2
Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius
3
Atomic radius of the elements increases as one moves down the first group of the periodic table
4
Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table
21
PYQ 2018
medium
chemistry ID: neet-ug-
Which of the following oxides is most acidic in nature ?
1
CaO
2
MgO
3
BaO
4
BeO
22
PYQ 2022
easy
chemistry ID: neet-ug-
The lUPAC name of an element with atomic number 119 is
1
ununennium
2
unnilennium
3
unununnium
4
ununoctium