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

Chemistry JAMB Past Questions

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

Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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
831
Catalytic hydrogenation of benzene produces?
  • A. an aromatic hydrocarbon
  • B. margarine
  • C. cyclohexane
  • D. D.D.T
View Answer & Discuss (2) JAMB 1993
832
Which of the following represents saponification?
  • A. Reaction of carboxylic acids with sodium hydroxide
  • B. Reaction of alkanoates with acid
  • C. Reaction of alkanoates with alcohols
  • D. Reaction of alkanoates with sodium hydroxide
View Answer & Discuss (6) JAMB 1993
833
The confirmatory test for alkanoic acids in organic qualitative analysis is the?
  • A. turning of wet blue litmus paper red
  • B. reaction with alkanols to form esters
  • C. reaction with sodium hydroxide to form salt and water
  • D. reaction with aqueous Na2COsp3 to liberate a gas which turns lime water milky
View Answer & Discuss (8) JAMB 1993
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Post UTME Past Questions Agent
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
834
A mixture of sand, ammonium chloride and sodium chloride is best separated by?
  • A. sublimation followed by addition of water and filteration
  • B. sublimation followed by addition of water and evaporation
  • C. addition of water followed by filtration and sublimation
  • D. addition of water followed by crystallization and sublimation
View Answer & Discuss (8) JAMB 1994
835
A pure solid usually melts?
  • A. over a wide range of temperature
  • B. over a narrow range of temperature
  • C. at a lower temperature than the impure one
  • D. at the same temperature as the impure one
View Answer & Discuss (8) JAMB 1994
Start a Free Practice Test
 
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Post UTME Past Questions Agent