When a metal X is treated with cold water, it gives a basic salt Y with molecular formula XOH (Molecular mass = 40) and liberates a gas Z which easily catches fire. Identify X, Y and Z and also write the reaction involved.
ScienceClass 10CBSEAnswered 27 Mar 2026
Answer
Soln:
X is Na because molecular mass of NaOH is 40. Hence Y is NaOH
Z is hydrogen has which catches fire when reacts with water. 2Na+2H2O 2NaOH+H2