Your School's Whatsapp Group - Join Us now
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

Chemistry WAEC Past Questions

Clear Selections
Change Subject Post a Question Check Syllabus Study My Bookmarks Past Questions Videos Watch Video Lessons Download App

WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
1536

 (a) What is a carbohydrate?

(b) Name two types of carbohydrates and give one example of each type

View Answer & Discuss WAEC 1988
1537

(a) Name the major raw materials used in the manufacture of the following:

(i) polythene

(ii) margarine

(iii) cement

(b) State one problem associated with oil producing areas

View Answer & Discuss (2) WAEC 1988
1538

Distinguish between cracking and reforming. Of what importance are the two processes in the petroleum industry?

View Answer & Discuss WAEC 1988
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
Your School's Whatsapp Group - Join Us now
1539

State Gay-Lussac's law and illustrate the law with one chemical reaction.

View Answer & Discuss WAEC 1988
1540

(a) Explain with equation where appropriate, the functions of the following substances in the Solvay Process:

(i) limestone,

(ii) ammonia,

(iii) brine.

 

(b) Explain why the reaction between aqueous sodium trioxocarbonate (IV) solution and dilute hydrochloric acid is a neutralization reaction.

(c) Calculate the mass of sodium trioxocarbonate (IV) produced by the complete decomposition of 16.8g of sodium hydrogen trioxocarbonate (IV) (H = 1, O = 16, Na = 23, S = 33)

View Answer & Discuss WAEC 1988
Start a Free Practice Test
 
Post UTME Past Questions Agent
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Your School's Whatsapp Group - Join Us now
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now