The Halogens GCE Revision Questions Chemistry o level

The Halogens GCE Revision Questions Chemistry

1. Describe two series of experiments that could be conducted using chlorine, bromine, iodine or their compounds to confirm them as belonging to the same family of elements.

2. (a) Describe the large scale production of chlorine

(b) Give three beneficial uses of chlorine to society.

(c) List two bi-products obtained during this process

3. The elements chlorine, bromine and iodine belong to the same family of the periodic table.

(a) Give the name of this family _____

(b) Describe what would be observed when

• bromine is added to aqueous potassium iodide ____
• bromine is added to aqueous potassium chloride.

(c) When chlorine passed through a colorless aqueous potassium salt, a reddish-brown color appears.

• What could the reddish-brown color be due to?
• Write an equation for the reaction taking place.

4. (a) Which halogen is used for treating domestic water supplies and swimming pool water? 

(b) What does it do? 

5.  (a) Find out four cases where chlorine is changed to another useful compound or material, 

 (b) Briefly describe the uses of them. 

6.  What are the two uses of hydrogen gas in the manufacture of other products. 

7.  What are the three products that use sodium hydroxide in their manufacture 

8. (a) Which compounds of the halogens are 

• used for photographic film? 
•  What sorts of radiation affect the film?  
• What is formed from the silver salt when it is hit by the radiation? 

9. (a) What is formed on combining chlorine and hydrogen?  describe the product. 

(b) What does it form when dissolved in water? and what pH will the solution have? 

(c) What sort of chemical is it? and what sort of chemicals react with the solution and what sort of compounds are formed? 

(d) What would you expect to form if you combined 

•  hydrogen and bromine?,  
• hydrogen and iodine?  

(e) What physical and chemical properties might you expect them to have? 

Credits to :

Chemistry in Practice.

By Njike Nchopah Kits    Ndula David  Funjong George    

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 "the halogens" 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.