Periodic Table · JEE Main previous year questions

2023 10 questions

1. Q622023 · 13 Apr 2023 · Shift 1

   Which of the following statements are not correct? A. The electron gain enthalpy of $\mathrm{F}$ is more negative than that of $\mathrm{Cl}$. B. Ionization enthalpy decreases in a group of periodic table. C. The electronegativity of an atom depends upon the atoms bonded to it. D. ${\mathrm{Al}}_2{\mathrm{O}}_3$ and $\mathrm{NO}$ are examples of amphoteric oxides. Choose the most appropriate answer from the options given below :

   1. A.A, B, C and D
   2. B.A, C and D Only
   3. C.A, B and D Only
   4. D.B and D Only
   Show answer

   Answer: B

2. Q692023 · 13 Apr 2023 · Shift 1

   The pair of lanthanides in which both elements have high third - ionization energy is :

   1. A.Dy, Gd
   2. B.Lu, Yb
   3. C.Eu, Yb
   4. D.Eu, Gd
   Show answer

   Answer: C

3. Q742023 · 10 Apr 2023 · Shift 2

   The correct order of metallic character is :

   1. A.K > Be > Ca
   2. B.Ca > K > Be
   3. C.K > Ca > Be
   4. D.Be > Ca > K
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   Answer: C

4. Q632023 · 8 Apr 2023 · Shift 1

   The correct order of electronegativity for given elements is:

   1. A.$\mathrm{C}>\mathrm{P}>\mathrm{At}>\mathrm{Br}$
   2. B.$\mathrm{Br}>\mathrm{C}>\mathrm{At}>\mathrm{P}$
   3. C.$\mathrm{Br}>\mathrm{P}>\mathrm{At}>\mathrm{C}$
   4. D.$\mathrm{P}>\mathrm{Br}>\mathrm{C}>\mathrm{At}$
   Show answer

   Answer: B

5. Q652023 · 8 Apr 2023 · Shift 2
   
   1. A.
   2. B.
   3. C.
   4. D.
   Show answer

   Answer: B

6. Q762023 · 1 Feb 2023 · Shift 1

   Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Hydrogen is an environment friendly fuel. Reason R : Atomic number of hydrogen is 1 and it is a very light element. In the light of the above statements, choose the correct answer from the options given below :

   1. A.Both A and R are true but R is NOT the correct explanation of A
   2. B.A is false but R is true
   3. C.A is true but R is false
   4. D.Both A and R are true and R is the correct explanation of A
   Show answer

   Answer: A

7. Q662023 · 31 Jan 2023 · Shift 1

   The correct increasing order of the ionic radii is

   1. A.${\mathrm{Cl}}^{-}<{\mathrm{Ca}}^{2+}<{\mathrm{K}}^{+}<{\mathrm{S}}^{2-}$
   2. B.${\mathrm{K}}^{+}<{\mathrm{S}}^{2-}<{\mathrm{Ca}}^{2+}<{\mathrm{Cl}}^{-}$
   3. C.${\mathrm{Ca}}^{2+}<{\mathrm{K}}^{+}<{\mathrm{Cl}}^{-}<{\mathrm{S}}^{2-}$
   4. D.${\mathrm{S}}^{2-}<{\mathrm{Cl}}^{-}<{\mathrm{Ca}}^{2+}<{\mathrm{K}}^{+}$
   Show answer

   Answer: C

8. Q722023 · 30 Jan 2023 · Shift 1

   Match List I with List II | List I (Atomic number) | List II (Block of periodic table) | | :--- | :--- | | A. 37 | I. p-block | | B. 78 | II. d-block | | C. 52 | III. f-block | | D. 65 | IV. s-block | Choose the correct answer from the options given below :

   1. A.A - II, B - IV, C - I, D - III
   2. B.A - IV, B - III, C - II, D - I
   3. C.A - IV, B - II, C - I, D - III
   4. D.A - I, B - III, C - IV, D - II
   Show answer

   Answer: C

9. Q782023 · 25 Jan 2023 · Shift 2

   Which of the following represents the correct order of metallic character of the given elements?

   1. A.K < Mg < Be < Si
   2. B.Si < Be < Mg < K
   3. C.Be < Si < Mg < K
   4. D.Be < Si < K < Mg
   Show answer

   Answer: B

10. Q722023 · 24 Jan 2023 · Shift 1
    
    1. A.$1$
    2. B.$\frac{1}{2}$
    3. C.$2$
    4. D.$3$
    Show answer

    Answer: B