Hydrogen GCE Revision Questions Chemistry o level

Hydrogen Revision Questions Chemistry

1. Hydrogen can be prepared in the laboratory by reacting hydro chloric acid with zinc metal

(a) How do you test for the gas?

(b) State any two factors that can make the reaction go faster

(c) Other metals like Ca, Mg, Fe, and Na can also be used in this preparation. Why is Zinc preferred to these other metals?

(d) In the reaction between zinc and excess hydro chloric acid at room temperature, 4800cm3 of hydrogen was collected. Calculate the mass of zinc needed to produce this volume of hydrogen.

(e) The collection of gases depends on some of their properties.

• Give a method of collection of hydrogen.
• On what property of hydrogen does this method depend?

(f) Give two important uses of hydrogen

Meets up with settings of the G.C.E. Ordinary Level Chemistry examination organised by the Cameroon G.C.E. Board.

Essay questions and structural questions covering the whole of Ordinary Level Chemistry Syllabus from form three to five.

Use of Chemistry revision questions. 

Above questions are revision questions for "Chemistry" for ordinary level (o level). 

Candidates can use the above questions to prepare for the Cameroon General certificate of examination board GCE chemistry.

The questions are not only for Cameroonians preparing for the G.C.E but they are revision questions for all students world wide preparing for the GCE or any other Examination.