Periodic Table · JEE Main previous year questions

2024 15 questions

1. Q712024 · 9 Apr 2024 · Shift 2

   Match List I with List II $$\begin{array}{llll}& \text{LIST I}& & \text{LIST II}\\ \text{A.}& \text{Melting Point }[\mathrm{K}]& \text{I.}& \mathrm{Tl}>\mathrm{In}>\mathrm{Ga}>\mathrm{Al}>\mathrm{B}\\ \text{B.}& \text{Ionic Radius }[{\mathrm{M}}^{+3}/pm]& \text{II.}& \mathrm{B}>\mathrm{Tl}>\mathrm{Al}\approx \mathrm{Ga}>\mathrm{In}\\ \text{C.}& {\Delta }_{\mathrm{i}}{\mathrm{H}}_1[\mathrm{kJ}\mathrm{mo}{\mathrm{l}}^{-1}]& \text{III.}& \mathrm{Tl}>\mathrm{In}>\mathrm{Al}>\mathrm{Ga}>\mathrm{B}\\ \text{D.}& \text{Atomic Radius }[\mathrm{pm}]& \text{IV.}& \mathrm{B}>\mathrm{Al}>\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}\end{array}$$ Choose the correct answer from the options given below:

   1. A.A-IV, B-I, C-II, D-III
   2. B.A-I, B-II, C-III, D-IV
   3. C.A-III, B-IV, C-I, D-II
   4. D.A-II, B-III, C-IV, D-I
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   Answer: A

2. Q852024 · 9 Apr 2024 · Shift 2· Numerical answer

   A transition metal 'M' among Sc, Ti, V, Cr, Mn and Fe has the highest second ionisation enthalpy. The spin-only magnetic moment value of ${\mathrm{M}}^{+}$ ion is ____ BM (Nearest integer) (Given atomic number $\mathrm{Sc}:21$, $\mathrm{Ti}:22$, $\mathrm{V}:23$, $\mathrm{Cr}:24$, $\mathrm{Mn}:25$, $\mathrm{Fe}:26$)

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   Answer: 6

3. Q692024 · 8 Apr 2024 · Shift 1

   Match List I with List II LIST I (Elements) A. $\mathrm{Cl},\mathrm{S}$ B. $\mathrm{Ge},\mathrm{As}$ C. $\mathrm{Fr},\mathrm{Ra}$ D. $\mathrm{F},\mathrm{O}$ LIST II (Properties in their respective groups) I. Elements with highest electronegativity II. Elements with largest atomic size III. Elements which show properties of both metals and non-metal IV. Elements with highest negative electron gain enthalpy Choose the correct answer from the options given below:

   1. A.A-III, B-II, C-I, D-IV
   2. B.A-II, B-I, C-IV, D-III
   3. C.A-II, B-III, C-IV, D-I
   4. D.A-IV, B-III, C-II, D-I
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   Answer: D

4. Q732024 · 8 Apr 2024 · Shift 2

   Identify the correct statements about p-block elements and their compounds. (A) Non metals have higher electronegativity than metals. (B) Non metals have lower ionisation enthalpy than metals. (C) Compounds formed between highly reactive nonmetals and highly reactive metals are generally ionic. (D) The non-metal oxides are generally basic in nature. (E) The metal oxides are generally acidic or neutral in nature. Choose the correct answer from the options given below :

   1. A.(B) and (D) only
   2. B.(B) and (E) only
   3. C.(D) and (E) only
   4. D.(A) and (C) only
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   Answer: D

5. Q712024 · 5 Apr 2024 · Shift 2

   The correct statements from the following are : (A) The decreasing order of atomic radii of group 13 elements is $\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}>\mathrm{Al}>\mathrm{B}$. (B) Down the group 13 electronegativity decreases from top to bottom. (C) $\mathrm{Al}$ dissolves in dil. $\mathrm{HCl}$ and liberates ${\mathrm{H}}_2$ but conc. $\mathrm{HN}{\mathrm{O}}_3$ renders $\mathrm{Al}$ passive by forming a protective oxide layer on the surface. (D) All elements of group 13 exhibits highly stable +1 oxidation state. (E) Hybridisation of $\mathrm{Al}$ in $[\mathrm{Al}({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{3+}$ ion is $\mathrm{s}{\mathrm{p}}^3{\mathrm{d}}^2$. Choose the correct answer from the options given below :

   1. A.(A), (B), (C) and (E) only
   2. B.(C) and (E) only
   3. C.(A), (C) and (E) only
   4. D.(A) and (C) only
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   Answer: B

6. Q802024 · 5 Apr 2024 · Shift 2

   Given below are two statements : Statement I : The metallic radius of $\mathrm{Na}$ is $1.86{\mathrm{A}}^{\circ }$ and the ionic radius of $\mathrm{N}{\mathrm{a}}^{+}$ is lesser than $1.86{\mathrm{A}}^{\circ }$ Statement II : Ions are always smaller in size than the corresponding elements. In the light of the above statements, choose the correct answer from the options given below :

   1. A.Both Statement I and Statement II are true
   2. B.Statement I is incorrect but Statement II is true
   3. C.Both Statement I and Statement II are false
   4. D.Statement I is correct but Statement II is false
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   Answer: D

7. Q902024 · 4 Apr 2024 · Shift 1· Numerical answer

   Consider the following reaction $$\mathrm{Mn}{\mathrm{O}}_2+\mathrm{KOH}+{\mathrm{O}}_2\to \mathrm{A}+{\mathrm{H}}_2\mathrm{O}$$ Product 'A' in neutral or acidic medium disproportionate to give products 'B' and 'C' along with water. The sum of spin-only magnetic moment values of B and C is ____ BM. (nearest integer) (Given atomic number of $\mathrm{Mn}$ is 25)

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   Answer: 4

8. Q682024 · 4 Apr 2024 · Shift 2

   Given below are two statements : Statement I : The correct order of first ionization enthalpy values of $\text{Li},\text{Na},\text{F}$ and $\text{Cl}$ is $\text{Na}<\text{Li}<\text{Cl}<\text{F}$. Statement II : The correct order of negative electron gain enthalpy values of $\text{Li},\text{Na},\text{F}$ and $\text{Cl}$ is $\text{Na}<\text{Li}<\text{F}<\text{Cl}$ In the light of the above statements, choose the correct answer from the options given below :

   1. A.Statement I is true but Statement II is false
   2. B.Both Statement I and Statement II are false
   3. C.Statement I is false but Statement II is true
   4. D.Both Statement I and Statement II are true
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   Answer: D

9. Q782024 · 1 Feb 2024 · Shift 2

   Given below are two statements : Statement (I) : Both metals and non-metals exist in p and d-block elements. Statement (II) : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals. In the light of the above statements, choose the most appropriate answer from the options given below :

   1. A.Both Statement I and Statement II are false
   2. B.Both Statement I and Statement II are true
   3. C.Statement I is false but Statement II is true
   4. D.Statement I is true but Statement II is false
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   Answer: C

10. Q622024 · 31 Jan 2024 · Shift 1

    Consider the oxides of group 14 elements $\mathrm{Si}{\mathrm{O}}_2,\mathrm{Ge}{\mathrm{O}}_2,\mathrm{Sn}{\mathrm{O}}_2,\mathrm{Pb}{\mathrm{O}}_2,\mathrm{CO}$ and $\mathrm{GeO}$. The amphoteric oxides are

    1. A.$\mathrm{Sn}{\mathrm{O}}_2,\mathrm{CO}$
    2. B.$\mathrm{Si}{\mathrm{O}}_2,\mathrm{Ge}{\mathrm{O}}_2$
    3. C.$\mathrm{Sn}{\mathrm{O}}_2,\mathrm{Pb}{\mathrm{O}}_2$
    4. D.$\mathrm{GeO},\mathrm{Ge}{\mathrm{O}}_2$
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    Answer: C

11. Q832024 · 31 Jan 2024 · Shift 1· Numerical answer

    The ionization energy of sodium in $\mathrm{kJ}\mathrm{mo}{\mathrm{l}}^{-1}$, if electromagnetic radiation of wavelength $242\mathrm{nm}$ is just sufficient to ionize sodium atom is ____.

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    Answer: 494

12. Q752024 · 31 Jan 2024 · Shift 2

    Consider the following elements. $$\begin{array}{ll}\text{Group}\downarrow & {\mathrm{A}}^{\prime }{\mathrm{B}}^{\prime }\to \text{Period}\\ & {\mathrm{C}}^{\prime }{\mathrm{D}}^{\prime }\end{array}$$ Which of the following is/are true about ${\mathrm{A}}^{\prime },{\mathrm{B}}^{\prime },{\mathrm{C}}^{\prime }$ and ${\mathrm{D}}^{\prime }$ ? A. Order of atomic radii: ${\mathrm{B}}^{\prime }<{\mathrm{A}}^{\prime }<{\mathrm{D}}^{\prime }<{\mathrm{C}}^{\prime }$ B. Order of metallic character: ${\mathrm{B}}^{\prime }<{\mathrm{A}}^{\prime }<{\mathrm{D}}^{\prime }<{\mathrm{C}}^{\prime }$ C. Size of the element: ${\mathrm{D}}^{\prime }<{\mathrm{C}}^{\prime }<{\mathrm{B}}^{\prime }<{\mathrm{A}}^{\prime }$ D. Order of ionic radii: ${\mathrm{B}}^{\prime +}<{\mathrm{A}}^{\prime +}<{\mathrm{D}}^{\prime +}<{\mathrm{C}}^{\prime +}$ Choose the correct answer from the options given below :

    1. A.A only
    2. B.B, C and D only
    3. C.A and B only
    4. D.A, B and D only
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    Answer: D

13. Q902024 · 30 Jan 2024 · Shift 1· Numerical answer

    If IUPAC name of an element is "Unununnium" then the element belongs to $n^{\text{th}}$ group of Periodic table. The value of n is _________.

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    Answer: 11

14. Q662024 · 29 Jan 2024 · Shift 1

    Given below are two statements : Statement I : The electronegativity of group 14 elements from $\mathrm{Si}$ to $\mathrm{Pb}$, gradually decreases. Statement II : Group 14 contains non-metallic, metallic, as well as metalloid elements. In the light of the above statements, choose the most appropriate from the options given below :

    1. A.Statement I is false but Statement II is true
    2. B.Both Statement I and Statement II are true
    3. C.Both Statement I and Statement II are false
    4. D.Statement I is true but Statement II is false
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    Answer: A

15. Q702024 · 27 Jan 2024 · Shift 1

    Given below are two statements : Statement (I) : The $4f$ and $5f$ - series of elements are placed separately in the Periodic table to preserve the principle of classification. Statement (II) : S-block elements can be found in pure form in nature. In the light of the above statements, choose the most appropriate answer from the options given below :

    1. A.Statement I is false but Statement II is true
    2. B.Both Statement I and Statement II are true
    3. C.Statement I is true but Statement II is false
    4. D.Both Statement I and Statement II are false
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    Answer: C