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Questions Available: 24
Year: 2025
Topic: Classification of Elements and Periodicity in Properties
1.
Match List I with List Il

Choose the correct answer from the options given below :
(1).
A-III, B-II, C-I, D-IV
(2).
A-III, B-IV, C-II, D-I
(3).
A-III, B-IV, C-I, D-II
(4).
A-III, B-II, C-IV, D-I

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Year: 2024
Topic: Classification of Elements and Periodicity in Properties
2.
Arrange the following elements in increasing order of electronegativity:
N, O, F, C, Si
Choose the correct answer from the options given below
(1).
O < F < N < C < Si
(2).
F < O < N < C < Si
(3).
Si < C < N < O < F
(4).
Si < C < O < N < F

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Year: 2023
Topic: Classification of Elements and Periodicity in Properties
3.
9. Match List-I with List-II.
List-IList-II
A. Coke I. Carbon atoms are sp3 hybridised
B. Diamond II. Used as a dry lubricant
C. Fullerene II. Used as a reducing Oagent
D. Graphite IV. Cage like molecules
Choose the correct answer from the options given below:
(1).
A-IV, B-I, C-II, D-III
(2).
A-III, B-I, C-IV, D-II
(3).
A-III, B-IV, C-I, D-II
(4).
A-II, B-IV, C-I, D-III

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Year: 2025
Topic: Classification of Elements and Periodicity in Properties
4.
Which of the following statements are true?
A. Unlike \(G_a\) that has a very high melting point, \(G_s\) has a very low melting point.
B. On Pauling scale, the electronegativity values of N and Cl are not the same.
C. Ar, K+, C-, Ca2+, and S2- are allisoelectronic species.
D. The correct order of the first ionization enthalpies of Na, Mg, Al, and Si is Si > Al > Mg > Na.
E. The atomic radius of Cs is greater than that of Li and Rb.
Choose the correct answer from the options given below:
(1).
A, C, and E only
(2).
A, B, and E only
(3).
C and E only
(4).
C and D only

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Year: 2025
Topic: Classification of Elements and Periodicity in Properties
5.
Given below are two statements :
Statement I : Like nitrogen that can form ammonia, arsenic can form arsine.
Statement II : Antimony cannot form antimony pentoxide.
In the light of the above statements, choose the most appropriate answer from the options given below:
(1).
Statement I is incorrect but Statement II is correct
(2).
Both Statement I and Statement II are correct
(3).
Both Statement I and Statement II are incorrect
(4).
Statement I is correct but Statement II is incorrect

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Solution
Year: 2025
Topic: Classification of Elements and Periodicity in Properties
6.
Match List - I with List - II

Choose the correct answer from the options given below :
(1).
A-IV, B-II, C-I, D-III
(2).
A-II, B-I, C-IV, D-III
(3).
A-ll, B-I, C-III, D-IV
(4).
A-IV, B-II, C-III, D-I

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Solution
Year: 2025
Topic: Classification of Elements and Periodicity in Properties
7.
Which among the following electronic configurations belong to main group elements?
A. [Ne]3s1
B. [Ar]3d3 4s2C. [Kr]4d10 5s2 5p5
D. [Ar]3d104s1
E. [Rn]5f0 6d27s2
Choose the correct answer from the option given below :
(1).
A, C and D only
(2).
B and E only
(3).
A and C only
(4).
D and E only

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Year: 2023
Topic: Classification of Elements and Periodicity in Properties
8.
The element expected to form largest ion to achieve the nearest noble gas configuration is
(1).
F
(2).
N
(3).
Na
(4).
O

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Solution
Year: 2023
Topic: Classification of Elements and Periodicity in Properties
9.
Taking stability as the factor, which one of the following represents correct relationship?
(1).
Inl3 > InI
(2).
AlCl > AlCl3
(3).
Tll > TII3
(4).
TICl3 > TICI

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Solution
Year: 2023
Topic: Classification of Elements and Periodicity in Properties
10.
Match List-I with List-II

Choose the correct answer from the options given below:
(1).
A-IIL, B-IV, C-I, D-II
(2).
A-I, B-LII, C-IV, D-II
(3).
A-IIL, B-IV, C-II, D-I
(4).
A-I, B-IIL, C-IL, D-IV

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Year: 2022
Topic: Classification of Elements and Periodicity in Properties
11.
Identify the incorrect statement from the following
(1).
Alkali metals react with water to form their hydroxides.
(2).
The oxidation number of K in KO2 is +4.
(3).
Ionisation enthalpy of alkali metals decreases from top to bottom in the group.
(4).
Lithium is the strongest reducing agent among the alkali metals.

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Year: 2022
Topic: Classification of Elements and Periodicity in Properties
12.
The IUPAC name of an element with atomicnumber 119 is
(1).
ununennium
(2).
unnilennium
(3).
unununnium
(4).
ununoctium

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Solution
Year: 2022
Topic: Classification of Elements and Periodicity in Properties
13.
Given below are two statements: one is labelledas Assertion (A) and the other is labelled asReason (R).
Assertion (A) : ICI is more reactive than I2.
Reason (R): I-CI bond is weaker than I-I bond.
In the light of the above statements, choose themost appropriate answer from the options givenbelow:
(1).
Both (A) and (R) are correct and (R) is the correctexplanation of (A).
(2).
Both (A) and (R) are correct but (R) is not the correct explanation of (A).
(3).
(A) is correct but (R) is not correct.
(4).
(A) is not correct but (R) is correct.

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Solution
Year: 2022
Topic: Classification of Elements and Periodicity in Properties
14.
Given below are two statements:
Statement I : The boiling points of the following hydrides of group 16 elements increases in the order
H2O < H2S < H2Se < H2Te.
Statement II: The boiling points of these hydrides increase with increase in molar mass.
In the light of the above statements, choose themost appropriate answer from the options givenbelow :
(1).
Both Statement I and Statement II are correct.
(2).
Both Statement I and Statement II are incorrect.
(3).
Statement I is correct but Statement II isincorrect.
(4).
Statement I is incorrect but Statement II isCorrect.

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Solution
Year: 2022
Topic: Classification of Elements and Periodicity in Properties
15.
Match List-I with List-II

Choose the correct answer from the options givenbelow :
(1).
(a) - (iv), (b) - (i), (c) – (iii), (d) - (ii)
(2).
(a) -(iii), (b) – (iv), (c) – (ii), (d) -(i)
(3).
(a) - (i), (b) - (iii), (c) - (iv), (d) - (i)
(4).
(a)- (ii), (b) - (iii), (c) -(i), (d) - (iv)

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Year: 2022
Topic: Classification of Elements and Periodicity in Properties
16.
Match List-I with List-II.

Choose the correct answer from the options givenbelow:
(1).
(a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
(2).
(a)-(iii), (b)– (i), (c) - (ii), (d) - (iv)
(3).
(a) - (iii), (b) - (ii), (c) - (iv), (d) - (iii)
(4).
(a) - (ii), (b) - (iii), (c) - (iv), (d) - (i)

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Year: 2022
Topic: Classification of Elements and Periodicity in Properties
17.
Which of the following statement is not correctabout diborane?
(1).
There are two 3-centre-2-electron bonds.
(2).
The four terminal B-H bonds are two centretwo electron bonds.
(3).
The four terminal Hydrogen atoms and the two Boron atoms lie in one plane.
(4).
Both the Boron atoms are sp2 hybridised.

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Solution
Year: 2021
Topic: Classification of Elements and Periodicity in Properties
18.
Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of :
(1).
belonging to same group
(2).
diagonal relationship
(3).
lanthanoid contraction
(4).
having similar chemical properties

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Solution
Year: 2021
Topic: Classification of Elements and Periodicity in Properties
19.
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it ?
(1).
HF < HCl < HBr < HI : Increasing acidic strength
(2).
H2O < H2S < H2Se < H2Te : Increasing pKa values
(3).
NH3 < PH3 < AsH3 < SbH3 : Increasing acidic character
(4).
CO2 < SiO2 < SnO2 < PbP2 : Increasing oxidizing power

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Solution
Year: 2020
Topic: Classification of Elements and Periodicity in Properties
20.
ldentify the incorrect match.
(1).
(b), (ii)
(2).
(c), (iii)
(3).
(d), (iv)
(4).
(a), (i)

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Solution
Year: 2019
Topic: Classification of Elements and Periodicity in Properties
21.
For the second period elements the correct increasing order of first ionisation enthalpy is
(1).
Li < B < Be < C < O < N < F < Ne
(2).
Li < B < Be < C < N < O < F < Ne
(3).
Li < Be < B < C < O < N < F < Ne
(4).
Li < Be < B < C < N < O < F < Ne

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Solution
Year: 2018
Topic: Classification of Elements and Periodicity in Properties
22.
Among CaH2 , BeH2, BaH2 , the order of ionic character is
(1).
BaH2 < BeH2 < CaH2
(2).
BeH2 < BaH2 < CaH2
(3).
CaH2 < BeH2 < BaH2
(4).
BeH2 < CaH2 < BaH2

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Solution
Year: 2018
Topic: Classification of Elements and Periodicity in Properties
23.
Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3, the simplest formula for this compound is
(1).
Mg3X2
(2).
Mg2X
(3).
MgX2
(4).
Mg2X3

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Solution
Year: 2016
Topic: Classification of Elements and Periodicity in Properties
24.
In which of the following options the order of arrangement does not agree with the variation of property indicated against it ?
(1).
B < C < N < O (increasing first ionisation enthalpy)
(2).
I < Br < Cl < F (increasing electron gain enthalpy)
(3).
Li < Na < K < Rb (increasing metallic radius)
(4).
Al3+ < Mg2+ < Na+ < F- (increasing ionic size)

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