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Chemistry - Hydrogen

Practise 11 KCET previous year questions on Hydrogen, compiled from papers spanning 2008 to 2023. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty KCET tests.

Hydrogen has been asked in 8 of the 20 years of KCET papers analysed (2007–2026), with 11 questions in all. 55% of them were easy, 45% moderate and 0% tough. Most of its questions came from 2023, with 2 questions that year. In the last three years (2024–2026) it had 0 questions across 3 papers, about 0 per paper.

The chapter's 5 topics are not weighted equally: Preparation and Properties of Hydrogen (4 questions, 36%), Preparation and Properties of Water (3 questions, 27%), and Chemical properties of hydrogen peroxide (2 questions, 18%) have been asked the most. Preparation and Properties of Hydrogen has also led over the last five years, with 1 question.

  1. 1The composition of water gas is2023Preparation and Properties of Hydrogen
  2. 2A solution of hydrogen peroxide is2023Preparation and Properties of Hydrogen Peroxide
  3. 3Which of the following hydrides is electron deficient?2022Hydrides
  4. 4Permanent hardness cannot be removed by2021Preparation and Properties of Water
  5. 5Which of the following is NOT true regarding the usage of hydrogen as a fuel?2019Preparation and Properties of Hydrogen
  6. 6\( {H}_{2} {O}_{2} \) is2018Chemical properties of hydrogen peroxide
  7. 7Which of the following ions will cause hardness in water?2018Preparation and Properties of Water
  8. 8The Glycosidic linkage present in sucrose isbetween2017Preparation and Properties of Hydrogen
  9. 9In the given set of reactions. the IUPAC name of product ' \( Y \) ' is2015Chemical properties of hydrogen peroxide
  10. 10Water softening by Clark's process uses2015Preparation and Properties of Water
  11. 11Hydrogen gas is not liberated when the following metal is added to dil2008Preparation and Properties of Hydrogen

Frequently Asked Questions

1.How many questions are available for Hydrogen?

This chapter includes 11 questions compiled from KCET papers spanning 2008 to 2023.

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

These are KCET 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 KCET Chemistry?

Hydrogen has appeared in 8 of the 20 years of KCET papers covered here, with 11 questions across 8 papers - about one per paper it appears in.

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

Of the 11 questions analysed for this chapter, 55% are easy, 45% moderate and 0% tough. 2023 had the most, with 2 questions.

5.Which topics in Hydrogen should I focus on?

These topics have carried the most weightage in Hydrogen:

  • Preparation and Properties of Hydrogen - 4 questions (36%)
  • Preparation and Properties of Water - 3 questions (27%)
  • Chemical properties of hydrogen peroxide - 2 questions (18%)
6.Is Hydrogen's weightage in KCET going up or down?

Across all 8 papers analysed, Hydrogen has averaged about 1.4 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.