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National Open University Exam Past Question – JUNE/JULY 2013 EXAMINATION

NATIONAL OPEN UNIVERSITY OF NIGERIA

14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS SCHOOL OF SCIENCE AND TECHNOLOGY

JUNE/JULY EXAMINATION

 

COURSE CODE:   CHM 311

COURSE TITLE:  Petroleum Chemistry

TIME ALLOWED: 2hours

INSTRUCTION:    Answer 4 questions only

 

  1. (i) Write short notes on the following
  2. a. Generation of crude oil (4marks)
  3. Oil Fields (4marks)

c Oil Wells (4marks)

 

(ii) Define pour point      (1½marks)

 

  1. Write briefly on the following terms

(i)Town gas (4marks)

(ii) Bio gas (4marks)

(iii Hydrates  (2½marks)

(iv) Diagenesis (4marks)

(v) Metagenesis (3marks)

 

  1. Depending on the  relative ratio of  the hydrocarbon classes that   predominate  in   the mixture,  list  the various classes of crude oil. Discuss four of these classes in details.(17½marks)

 

4  (a) List the various methods of altering molecular structure in crude petroleum (3marks)

(b) Write short notes on each of the following terms:

(i) Upstream Oil Sector (4marks)

(ii) Downstream Oil Sector( 4marks)

(iii) Oil tanker( 4marks)

(iv) Pipeline transport (2½marks)

 

  1. (a) List two uses of methyl chloride (2 marks)

(b) Discuss the potential market for Nigerian gas (15½ marks)

 

  1. Write briefly on the following

 

  1. a. production of urea (6marks)
  2. uses of urea.(4marks)
  3. c. Uses of methanol(7 ½ marks)
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