Sulphur, Oxygen And Their Compounds GCE Revision Questions Chemistry o level

Sulphur, Oxygen And Their Compounds GCE Revision Questions Chemistry

1. (a) Describe the extraction of sulphur by the Frash process.

(b) Choose an important compound of sulphur and describe how the compound could be manufactured from sulphur.

(c) State two uses of the compound in Cameroon.

2. In the extraction of sulphur,

(a) Give two reasons why sulphur is not usually mined.

(b) Why water heated and kept under pressure?

(c) State the functions of

• the super heated water
• the hot compressed air.

(d) How is the sulphur eventually separated from the sulphur-water emulsion that is collected?

(e) Give four uses of sulphur

(f) Sulphur exists in two crystalline forms. Name them

3. Oxygen is prepared in the lab by heating potassium chlorate in the presence of a catalyst.

(a) What is a catalyst?

(b) Name the catalyst used in the reaction

(c) Give an equation for one other method of preparing oxygen in laboratory.

(d) Give four physical properties of oxygen.

(e) If 1.225g of KCLO3 are heated,

• calculate the mass of potassium chloride produced.
• Determine the volume of oxygen obtained at r.t.p. 

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 "Sulphur, Oxygen and their compounds" 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.