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Chemistry - Hydrogen

Practise 80 AP EAMCET previous year questions on Hydrogen, compiled from papers spanning 2001 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AP EAMCET tests.

Hydrogen has been asked in 22 of the 24 years of AP EAMCET papers analysed (2001–2024), with 80 questions in all. 65% of them were easy, 30% moderate and 5% tough. Most of its questions came from 2018, with 8 questions that year. In the last three years (2022–2024) it had 21 questions across 28 papers, about 0.8 per paper.

The chapter's 7 topics are not weighted equally: Hydrides (26 questions, 33%), Chemical properties of hydrogen peroxide (12 questions, 15%), and Preparation and Properties of Water (12 questions, 15%) have been asked the most. Hydrides has also led over the last five years, with 12 questions. Preparation and Properties of Hydrogen Peroxide has produced the most tough questions (2).

  1. 1Consider the following Statement I : acts as an oxidsing as well as reducing agent in both acidic and basic media. Statement-II : sample mea27 May, 2025 (M)Chemical properties of hydrogen peroxide
  2. 2Identify the hydride which is not correctly matched with the example given in brackets?26 May, 2025 (M)Hydrides
  3. 3Which of the following property is less for than ?26 May, 2025 (E)Preparation and Properties of Water
  4. 4Observe the following reactions I. II. III. Catalysts X, Y, Z respectively are24 May, 2025 (M)Preparation and Properties of Hydrogen
  5. 5Which set of elements form electron precise hydrides?23 May, 2025 (M)Hydrides
  6. 6The incorrect statement in the following is22 May, 2025 (M)Hydrides
  7. 7Which of the following sets are correctly matched? (i) - electron deficient hydride (ii) - electron precise hydride (iii) - election rich hy23 May, 2024 (M)Hydrides
  8. 8Identify the incorrect statement22 May, 2024 (M)Hydrides
  9. 9The hydrides of which group elements are examples of electron precise hydrides20 May, 2024 (E)Hydrides
  10. 10The correct statements among the following are i. Saline hydrides produce gas when reacted with water ii. Presently of the industrial dihydr19 May, 2024 (E)Preparation and Properties of Hydrogen Peroxide
  11. 11Two statements are given below. Statement-I: In dry cleaning, the solvent was earlier used and now it is replaced by liquified Statement-II:19 May, 2024 (E)Preparation and Properties of Hydrogen Peroxide
  12. 12Aluminum carbide on reaction with gives and ' X '. What is ' X '?18 May, 2024 (M)Chemical properties of heavy water
  13. 13In which of the following reaction, dihydrogen is not evolved?18 May, 2024 (M)Preparation and Properties of Hydrogen
  14. 14Given below are two statements Assertion (A): Protium and deuterium differ in their rates of reactions. Reason (R): They have different enth19 May, 2023 (M)Preparation and Properties of Hydrogen
  15. 15Arrange the hydrides in the increasing order of their boiling points18 May, 2023 (E)Hydrides
  16. 16The following methods can not be used to remove permanent hardness of water17 May, 2023 (M)Preparation and Properties of Water
  17. 17Which of the following statement (s) is/are correct (A) is non-volatile hydride (B) is polymeric hydride (C) is an electron precise hydride 17 May, 2023 (E)Hydrides
  18. 18Among the following the correct statements are I. and are saline hydrides with significant covalent character II. Saline hydrides are volati16 May, 2023 (M)Hydrides
  19. 19Among the following, the correct statement is16 May, 2023 (E)Preparation and Properties of Hydrogen
  20. 20Among the following, the correctly matched pair is15 May, 2023 (E)Hydrides
  21. 21The number of hydrogen molecules possible from its isotopes is08 Jul, 2022 (M)Preparation and Properties of Hydrogen
  22. 22Which of the following salts form hydrates?08 Jul, 2022 (E)Chemical properties of hydrogen
  23. 23Match the following.07 Jul, 2022 (E)Hydrides
  24. 24Hydration enthalpy of which of the following ions is highest?07 Jul, 2022 (E)Chemical properties of hydrogen
  25. 25Calcium carbide . The hybridisation of carbon atom(s) in05 Jul, 2022 (M)Chemical properties of heavy water
  26. 26Identify the correct statements from the following: (I) The formula of Calgon in . (II) Exhausted permutit is regenerated by aqueous solutio05 Jul, 2022 (E)Preparation and Properties of Water
  27. 27What are X and Y respectively in the following reactions X + D 2 O C 2 D 2 + P Y + D 2 O CD 4 + Q04 Jul, 2022 (M)Chemical properties of heavy water
  28. 28Which of the following solution produces on electrolysis?25 Aug, 2021 (E)Preparation and Properties of Hydrogen Peroxide
  29. 29The correct order of acidic character of the following is:20 Aug, 2021 (E)Hydrides
  30. 30Which metal oxide among the following gives H 2 O 2 on treatment with dilute acid?19 Aug, 2021 (M)Preparation and Properties of Hydrogen Peroxide
  31. 31Assertion ( A ) : The colour of old lead paintings can be restored by washing them with a dilute solution of H 2 O 2 . Reason ( R ) : Hydrog19 Aug, 2021 (E)Chemical properties of hydrogen peroxide
  32. 32Which of the following conclusions could not be derived from Rutherford s -particle scattering experiment:23 Sep, 2020 (M)Preparation and Properties of Hydrogen
  33. 33The correct order of acidic character of group- 16 hydrides is22 Sep, 2020 (E)Hydrides
  34. 34Elements of which of the following group(s) of periodic table do not form hybrides?21 Sep, 2020 (E)Hydrides
  35. 35A commercial sample of \( {H}_2 {O}_2\) marked as 100 volume hydrogen peroxide means18 Sep, 2020 (E)Preparation and Properties of Hydrogen Peroxide
  36. 36In which of the following reactions of \( {H}_2 {O}_2\) acts as an oxidising agent (either in acidic, alkaline or neutral medium)? (i) \(2 {17 Sep, 2020 (M)Chemical properties of hydrogen peroxide
  37. 37Hydrogen peroxide is17 Sep, 2020 (E)Chemical properties of hydrogen peroxide
  38. 38Which of the following are non-metal displacement reactions? (A) \( {Ca}(s)+2 {H}_2 {O}(l) {Ca}( {OH})_2(a q)+ {H}_2(g)\) (B) \( {V}_2 {O}_523 Apr, 2019 (M)Chemical properties of hydrogen
  39. 39Three vessels \((A, B, C)\) contain \( {H}_2 {O}_2\) solution. In vessel \(A, 500 {~mL}\) of \(10 {vol} {H}_2 {O}_2\) is present. \(100 {~mL23 Apr, 2019 (M)Preparation and Properties of Hydrogen Peroxide
  40. 40Which one of the following properties has same value for \( {H}_2\) and \( {D}_2\) ?20 Apr, 2019 (M)Preparation and Properties of Hydrogen
  41. 41Identify the correct statements from the following I. is an electron deficient hydride. II. an electron rich hydride. III. is a covalent hyd20 Apr, 2019 (E)Hydrides
  42. 42Match the following. List- I List- II A Electron-deficient hydride I CH 4 B Electron-precise hydride II B 2 H 6 C Electron-rich hydride III 25 Apr, 2018 (M)Hydrides
  43. 43Identify the correct statements from the following. (i) The number of hydrogen bonded water molecules in copper sulphate pentahydrate is one24 Apr, 2018 (M)Hydrides
  44. 44The correct statements from the following are : i. is used in Clark's method of removal of temporary hardness of water ii. of , on complete 24 Apr, 2018 (E)Preparation and Properties of Water
  45. 45The correct answer is23 Apr, 2018 (M)Hydrides
  46. 46In which of the following reactions, oxygen is not liberated?23 Apr, 2018 (E)Chemical properties of hydrogen peroxide
  47. 47A compound of group I element hydrolyses to form and . Another compound of group I element hydrolyses to form and . What are and respectivel23 Apr, 2018 (E)Chemical properties of hydrogen peroxide
  48. 48Which of the following statements are correct? (i) reacts violently with water to form and (ii) An example for electron rich hydride is (iii22 Apr, 2018 (M)Hydrides
  49. 49Identify the correct statements from the following. (i) reacts with dilute and aqueous solution separately and liberates hydrogen. (ii) Ti a22 Apr, 2018 (E)Hydrides
  50. 50How many millilitres of 20 volume solution is needed to react completely with of acidified , solution?26 Apr, 2017 (M)Preparation and Properties of Hydrogen Peroxide

Frequently Asked Questions

1.How many questions are available for Hydrogen?

This chapter includes 80 questions compiled from AP EAMCET papers spanning 2001 to 2025.

2.Are these questions only from AP EAMCET, or from other exams too?

These are AP EAMCET questions specifically for the Hydrogen chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Hydrogen an important chapter for AP EAMCET Chemistry?

Hydrogen has appeared in 23 of the 25 years of AP EAMCET papers covered here, with 80 questions across 64 papers - about one per paper it appears in.

4.What is the difficulty level of Hydrogen questions in AP EAMCET?

Of the 80 questions analysed for this chapter, 65% are easy, 30% moderate and 5% tough. 2018 had the most, with 8 questions.

5.Which topics in Hydrogen should I focus on?

These topics have carried the most weightage in Hydrogen:

  • Hydrides - 26 questions (33%)
  • Chemical properties of hydrogen peroxide - 12 questions (15%)
  • Preparation and Properties of Water - 12 questions (15%)
  • Preparation and Properties of Hydrogen Peroxide has produced the most tough questions (2).
6.Is Hydrogen's weightage in AP EAMCET going up or down?

Across all 64 papers analysed, Hydrogen has averaged about 1.3 questions per paper. In the last three years (2022–2024), that average has fallen, at about 0.8 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.