NEET PYQs for Dihydrogen with Solutions: Practice NEET Previous Year Questions

Updated on - Jan 19, 2026

Dihydrogen is an important topic in the Chemistry section in NEET exam. Practising this topic will increase your score overall and make your conceptual grip on NEET exam stronger.

This article gives you a full set of NEET PYQs for Dihydrogen with explanations for effective preparation. Practice of NEET Chemistry PYQs including Dihydrogen questions regularly will improve accuracy, speed, and confidence in the NEET 2026 exam.

NEET PYQs for Dihydrogen with Solutions

1.
Water gas is produced by
- Passing steam over red hot coke
- Passing steam and air over red hot
- Burnina coke is excess air
- Burning coke is limited supply of air
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2.
At its melting point ice is lighter than water because
- ${H_2O}$ molecules are more closely packed in solid state
- Ice crystals have hollow hexagonal arrangement of ${H_2O}$ molecules.
- On melting of ice the ${H_2O}$ molecule shrinks in size
- Ice froms mostly heavy water on first melting.
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3.
Which of the following statement about hydrogen is incorrect ?
- Hydrogen never acts as cation in ionic salts
- Hydronium ion, ${H_3O^+}$ exists freely in solution
- Dihydrogen does not act as a reducing agent
- Hydrogen has three isotopes of which tritium is the most common
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4.
The reaction of $H_2 O_ 2$ with hydrogen sulphide is an example of ................ reaction.
- addition
- oxidation
- reduction
- acidic
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