Chemistry - Hydrogen
Practise 7 COMEDK previous year questions on Hydrogen, compiled from papers spanning 2015 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 COMEDK tests.
Hydrogen has been asked in 5 of the 15 years of COMEDK papers analysed (2012–2026), with 7 questions in all. 71% of them were easy, 29% moderate and 0% tough. Most of its questions came from 2023, with 3 questions that year.
The chapter's 4 topics are not weighted equally: Chemical properties of hydrogen peroxide (2 questions, 29%), Preparation and Properties of Hydrogen (2 questions, 29%), and Preparation and Properties of Hydrogen Peroxide (2 questions, 29%) have been asked the most. Over the last five years the most frequent topics have been Preparation and Properties of Hydrogen Peroxide (2), Chemical properties of hydrogen peroxide (1), and Preparation and Properties of Hydrogen (1).
- 1Para and ortho hydrogen differ in:2023 (Evening Shift)Preparation and Properties of Hydrogen
- 2Decomposition of hydrogen peroxide can be prevented by adding2023 (Memory Based)Chemical properties of hydrogen peroxide
- 3Decomposition of hydrogen peroxide can be prevented by adding2023 (Morning Shift)Preparation and Properties of Hydrogen Peroxide
- 4Which of the following statement is incorrect for structure?2022Preparation and Properties of Hydrogen Peroxide
- 5Arrange the hydrides of group 15 in correct decreasing order of reducing nature.2021Hydrides
- 6The first fraction obtained during the fractionation of petroleum is2016Preparation and Properties of Hydrogen
- 7Decomposition of hydrogen peroxide can be prevented by adding2015Chemical properties of hydrogen peroxide
Frequently Asked Questions
1.How many questions are available for Hydrogen?
This chapter includes 7 questions compiled from COMEDK papers spanning 2015 to 2023.
2.Are these questions only from COMEDK, or from other exams too?
These are COMEDK 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 COMEDK Chemistry?
Hydrogen has appeared in 5 of the 15 years of COMEDK papers covered here, with 7 questions across 7 papers - about one per paper it appears in.
4.What is the difficulty level of Hydrogen questions in COMEDK?
Of the 7 questions analysed for this chapter, 71% are easy, 29% moderate and 0% tough. 2023 had the most, with 3 questions.
5.Which topics in Hydrogen should I focus on?
These topics have carried the most weightage in Hydrogen:
- Chemical properties of hydrogen peroxide - 2 questions (29%)
- Preparation and Properties of Hydrogen - 2 questions (29%)
- Preparation and Properties of Hydrogen Peroxide - 2 questions (29%)