Solution of hydrogen in palladium is ...
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Gas in solid solution
A solution is named by the physical state of the solute and of the solvent; the solvent, usually the component present in the larger amount, decides the state of the solution. Palladium is a solid that absorbs large volumes of hydrogen gas, so the solvent is a solid and the solute a gas: a gas in solid solution.
NCERT (2026-27 edition):
Types of Solutions – …
