In the laboratory, hydrogen is prepared by the action of
AConcentrated hydrochloric acid on gold
BDilute nitric acid on copper turnings
CDilute sulphuric acid on granulated zinc
DConcentrated sulphuric acid on glass
Answer & Solution
Correct answer: C. Dilute sulphuric acid on granulated zinc
1. The chapter section on laboratory preparation names the standard route.
2. Granulated zinc reacts with dilute H2SO4.
3. The products are zinc sulphate and hydrogen gas.
4. So option A is correct.
_Source: Selina Concise Chemistry Class 8, Ch on Hydrogen (Mistral OCR'd PDF), section on laboratory preparation_
Related questions
Besides VSEPR and the Kossel Lewis approach, which two theories are listed?Which theory is abbreviated VSEPR?Why can lattice enthalpy not be calculated directly from attraction and repulsion alone?Ionic bonds form most easily between elements with low ionization enthalpies and high negaWhat is the lattice enthalpy of sodium chloride?Lattice enthalpy is the energy required to separate one mole of an ionic solid into:The structures contributing to a resonance hybrid are called:Why was the concept of resonance introduced?