Hydrogen is a Class 11 Chemistry chapter that carries about 2.0% of the Chemistry questions in NEET. Practise it with 39 questions covering 3 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Hydrogen had 9 questions, about 0.7 a year. The most in one paper was 2, in AIPMT 2014.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 1 |
| NEET 2025 | 0 |
| NEET 2024 | 0 |
| NEET 2023 | 1 |
| NEET 2022 | 1 |
| NEET 2021 | 1 |
| NEET 2020 | 1 |
| NEET 2019 | 1 |
| NEET 2018 | 1 |
| NEET 2017 | 0 |
| NEET 2016 | 0 |
| Re-AIPMT 2015 | 0 |
| AIPMT 2014 | 2 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
Saline hydrides, such as NaH, react with water to give:
Answer: B. hydrogen gas and the metal hydroxide
Why: NaH + H₂O → NaOH + H₂.
Hydrogen resembles the halogens in that it:
Answer: A. forms a diatomic molecule and needs one electron to complete its shell
Why: Like a halogen, hydrogen is diatomic and one electron short of a noble-gas configuration, forming H-. But it also resembles alkali metals in losing an electron, which is why its placement is anomalous.
Calgon, used to soften hard water, is:
Answer: A. sodium hexametaphosphate
Why: It forms soluble complexes with Ca²⁺ and Mg²⁺.
Lithium aluminium hydride, LiAlH₄, is used as:
Answer: C. a reducing agent in organic chemistry
Why: The hydride ion is a very strong reductant.
The three isotopes of hydrogen are protium, deuterium and tritium. Of these, the radioactive one is:
Answer: B. tritium
Why: Tritium (³H) emits beta particles with a half-life of about 12.3 years; protium and deuterium are stable.
Heavy water (D₂O) is used in nuclear reactors as a:
Answer: A. moderator
Why: It slows down fast neutrons without absorbing many of them.
The thermal stability of the hydrides of group 15 elements:
Answer: B. decreases down the group (NH₃ > PH₃ > AsH₃ > SbH₃)
Why: The E–H bond becomes longer and weaker.
Ortho and para hydrogen differ in:
Answer: A. the relative spins of their two nuclei
Why: In ortho hydrogen the nuclear spins are parallel; in para hydrogen they are antiparallel.
Hydrogen carries about 2.0% of the Chemistry questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 9 times, about 0.7 questions a year.
Hydrogen is a Class 11 Chemistry chapter in the NCERT syllabus.
NeetVictory has 39 practice questions on Hydrogen, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
NeetVictory