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Chemistry - s Block Elements

Practise 134 JEE Main previous year questions on s Block Elements, compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Main tests.

s Block Elements has been asked in 18 of the 25 years of JEE Main papers analysed (2002–2026), with 134 questions in all. 53% of them were easy, 40% moderate and 7% tough. Most of its questions came from 2023, with 38 questions that year. In the last three years (2024–2026) it had 0 questions across 49 papers, about 0 per paper.

The chapter's 5 topics are not weighted equally: General Characteristics of Alkali Metals (47 questions, 35%), Alkaline Earth Metals (27 questions, 20%), and Compounds of Alkaline Earth Metals (22 questions, 16%) have been asked the most. General Characteristics of Alkali Metals has also led over the last five years, with 27 questions. Alkaline Earth Metals has produced the most tough questions (4).

  1. 1First and second ionization enthalpies of lithium are kJ mol and kJ mol respectively. Energy required to convert mg lithium (g) into (g) is 06 Apr, 2026 (M)General Characteristics of Alkali Metals
  2. 2The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is:02 Apr, 2026 (E)General Characteristics of Alkali Metals
  3. 3Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R : Assertion (A) : BeCl 2 and MgCl 2 pro15 Apr, 2023 (M)Properties of S-block elements
  4. 4Be ( OH ) 2 reacts with Sr ( OH ) 2 to yield an ionic salt. Choose the incorrect option related to this reaction from the following13 Apr, 2023 (M)General Characteristics of Alkali Metals
  5. 5In the given reaction cycle X , Y and Z respectively are12 Apr, 2023 (M)Compounds of Alkaline Earth Metals
  6. 6The density of alkali metals is in the order12 Apr, 2023 (M)General Characteristics of Alkali Metals
  7. 7Match List-I with List-II: List-I List-II A. K I. Thermonuclear reactions B. KCI II. Fertilizer C. KOH III. Sodium potassium pump D. Li IV. 11 Apr, 2023 (M)General Characteristics of Alkali Metals
  8. 8Alkali metal from the following with least melting point is11 Apr, 2023 (E)General Characteristics of Alkali Metals
  9. 9Mg NO 3 2 . XH 2 O and Ba NO 3 2 . YH 2 O , represent formula of the crystalline forms of nitrate salts. Sum of X and Y is.......11 Apr, 2023 (E)Compounds of Alkaline Earth Metals
  10. 10Lime reacts exothermally with water to give A which has low solubility in water. Aqueous solution of A is often used for the test of CO 2 , 10 Apr, 2023 (M)Compounds of Alkaline Earth Metals
  11. 11In the following reaction, the total number of oxygen atoms in X and Y is______ Na 2 O + H 2 O 2 X Cl 2 O 7 + H 2 O 2 Y10 Apr, 2023 (M)General Characteristics of Alkali Metals
  12. 12Number of water molecules in washing soda and soda ash respectively are :10 Apr, 2023 (E)Compounds of Alkali Metals
  13. 13Given below are two statements : Statement I : Lithium and Magnesium do not form superoxide Statement II : The ionic radius of Li + is large08 Apr, 2023 (M)General Characteristics of Alkali Metals
  14. 14What is the purpose of adding gypsum to cement?08 Apr, 2023 (M)Compounds of Alkaline Earth Metals
  15. 15For a good quality cement, the ratio of lime to the total of the oxides of Si , Al and Fe should be as close as to08 Apr, 2023 (E)Compounds of Alkaline Earth Metals
  16. 16Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R Assertion A : Sodium is about 30 times 08 Apr, 2023 (E)General Characteristics of Alkali Metals
  17. 17The setting time of Cement is increased by adding06 Apr, 2023 (M)Compounds of Alkaline Earth Metals
  18. 18Ion having highest hydration enthalpy among the given alkaline earth metal ions is:06 Apr, 2023 (E)General Characteristics of Alkali Metals
  19. 19Match List I with List II (A) Slaked lime (I) NaOH (B) Dead burnt plaster (II) Ca ( OH ) 2 (C) Caustic soda (III) Na 2 CO 3 10 H 2 O (D) Was01 Feb, 2023 (M)Compounds of Alkali Metals
  20. 20Choose the correct statement(s): A. Beryllium oxide is purely acidic in nature. B. Beryllium carbonate is kept in the atmosphere of CO 2 . C01 Feb, 2023 (M)Properties of S-block elements
  21. 21Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Gypsum is used for01 Feb, 2023 (E)Compounds of Alkaline Earth Metals
  22. 22The element playing significant role in neuromuscular function and interneuronal transmission is :31 Jan, 2023 (E)Compounds of Alkali Metals
  23. 23The number of alkali metal(s), from Li , K , Cs , Rb having ionization enthalpy greater than 400 kJ mol - 1 and forming stable super oxide i31 Jan, 2023 (E)General Characteristics of Alkali Metals
  24. 24The alkaline earth metal sulphate(s) which are readily soluble in water is/are: (A) BeSO 4 (B) MgSO 4 (C) CaSO 4 (D) SrSO 4 (E) BaSO 4 Choos30 Jan, 2023 (M)Compounds of Alkaline Earth Metals
  25. 25Lithium aluminium hydride can be prepared from the reaction of30 Jan, 2023 (M)Properties of S-block elements
  26. 26Chlorides of which metal are soluble in organic solvents:30 Jan, 2023 (E)Alkaline Earth Metals
  27. 27Which of the following reaction is correct?30 Jan, 2023 (E)General Characteristics of Alkali Metals
  28. 28The magnetic behaviour of Li 2 O , Na 2 O 2 and KO 2 , respectively, are29 Jan, 2023 (M)General Characteristics of Alkali Metals
  29. 29The correct order of hydration enthalpies is (A) K + (B) Rb + (C) Mg 2 + (D) Cs + (E) Ca 2 + Choose the correct answer from the options give29 Jan, 2023 (M)General Characteristics of Alkali Metals
  30. 30On heating, LiNO 3 gives how many compounds among the following? Li 2 O , N 2 , O 2 , LiNO 2 , NO 229 Jan, 2023 (E)General Characteristics of Alkali Metals
  31. 31Match List I with List II List I List II Elements Colour imparted to the flame A K I Brick Red B Ca II Violet C Sr III Apple Green D Ba IV C25 Jan, 2023 (M)General Characteristics of Alkali Metals
  32. 32Match List I with List II List I List II A. Cobalt catalyst I. H 2 + Cl 2 production B. Syngas II. Water gas production C. Nickel catalyst I25 Jan, 2023 (E)Properties of S-block elements
  33. 33Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A:- The alkali metals and the25 Jan, 2023 (E)General Characteristics of Alkali Metals
  34. 34Which one among the following metals is the weakest reducing agent?25 Jan, 2023 (E)General Characteristics of Alkali Metals
  35. 35Which of the following represents the correct order of metallic character of the given elements?25 Jan, 2023 (E)General Characteristics of Alkali Metals
  36. 36Match Column I with Column II Column I Column II A Soda ash I CaSO 4 B Chlorophyll II Ca OH 2 C Used in Whitewashing III Na 2 CO 3 D Dentist24 Jan, 2023 (M)Alkaline Earth Metals
  37. 37Reaction of BeO with ammonia and hydrogen fluoride gives ' A ' which on thermal decomposition gives BeF 2 and NH 4 F . What is ' A ' ?24 Jan, 2023 (M)Alkaline Earth Metals
  38. 38Identify the correct statements about alkali metals. A. The order of standard reduction potential ( M + | M ) for alkali metal ions is Na Rb24 Jan, 2023 (E)General Characteristics of Alkali Metals
  39. 39Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : Beryllium has less nega24 Jan, 2023 (E)Alkaline Earth Metals
  40. 40The number of s-electrons present in an ion with 55 protons in its unipositive state is24 Jan, 2023 (E)General Characteristics of Alkali Metals
  41. 41Lithium nitrate and sodium nitrate, when heated separately, respectively, give29 Jul, 2022 (M)General Characteristics of Alkali Metals
  42. 42Portland cement contains X to enhance the setting time. What is X ?29 Jul, 2022 (E)Compounds of Alkaline Earth Metals
  43. 43Which of the following statement is incorrect?28 Jul, 2022 (M)General Characteristics of Alkali Metals
  44. 44Statement I: An alloy of lithium and magnesium is used to make aircraft plates. Statement II : The magnesium ions are important for cell-mem28 Jul, 2022 (E)Compounds of Alkaline Earth Metals
  45. 45An element A of group 1 shows similarity to an element B belonging to group 2 . If A has maximum hydration enthalpy in group 1 then B is27 Jul, 2022 (E)General Characteristics of Alkali Metals
  46. 46Reaction of BeCl 2 with LiAlH 4 gives : (A) AlCl 3 (B) BeH 2 (C) LiH (D) LiCl (E) BeAlH 4 Choose the correct answer from options given below26 Jul, 2022 (M)Alkaline Earth Metals
  47. 47Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : LiF is sparingly solubl26 Jul, 2022 (E)General Characteristics of Alkali Metals
  48. 48Choose the correct order of density of the alkali metals25 Jul, 2022 (M)General Characteristics of Alkali Metals
  49. 49The correct order of density is25 Jul, 2022 (E)General Characteristics of Alkali Metals
  50. 50Match List-I with Match List-II List-I (Metal) List-II (Emitted light wavelength nm ) (A) Li (I) 670 . 8 (B) Na (II) 589 . 2 (C) Rb (III) 7829 Jun, 2022 (M)Properties of S-block elements

Frequently Asked Questions

1.How many questions are available for s Block Elements?

This chapter includes 134 questions compiled from JEE Main papers spanning 2002 to 2026.

2.Are these questions only from JEE Main, or from other exams too?

These are JEE Main questions specifically for the s Block Elements chapter. Questions from other exams like NTA Abhyas (JEE Main) or JEE Advanced are organised separately under their respective exam sections.

3.Is s Block Elements an important chapter for JEE Main Chemistry?

s Block Elements has appeared in 19 of the 25 years of JEE Main papers covered here, with 134 questions across 110 papers - about one per paper it appears in.

4.What is the difficulty level of s Block Elements questions in JEE Main?

Of the 134 questions analysed for this chapter, 53% are easy, 40% moderate and 7% tough. 2023 had the most, with 38 questions.

5.Which topics in s Block Elements should I focus on?

These topics have carried the most weightage in s Block Elements:

  • General Characteristics of Alkali Metals - 47 questions (35%)
  • Alkaline Earth Metals - 27 questions (20%)
  • Compounds of Alkaline Earth Metals - 22 questions (16%)
  • Alkaline Earth Metals has produced the most tough questions (4).
6.Is s Block Elements's weightage in JEE Main going up or down?

Across all 110 papers analysed, s Block Elements has averaged about 1.2 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.