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

Chemistry Past Questions

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

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
Post UTME Past Questions Agent
941
A compound that will NOT produce oxygen on heating is?
  • A. potasium dioxonitrate (III)
  • B. lead (IV) oxide
  • C. potassium trioxochlorate (V)
  • D. potassium trioxonitrate (V)
View Answer & Discuss (5) JAMB 1997
942
Coal gas is made up of carbon (II) oxide, hydrogen and?
  • A. nitrogen
  • B. air
  • C. argon
  • D. methane
View Answer & Discuss (3) JAMB 1997
943
2X(aq) + MnO2(s) + 4H+(aq) → X2(g) + Mn2+(aq) + 2H2O.
The reaction above can be used for the laboratory preparation of all halogens except fluorine because it is?
  • A. a poisionous gas
  • B. an oxidizing agent
  • C. electronegative in nature
  • D. highly reactive
View Answer & Discuss (2) JAMB 1997
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
944

The removal of rust from iron by treatment with tetraoxosulphate (IV) acid is based on the?

  • A. hydrolysis of the iron
  • B. reaction of acid with base
  • C. oxidationof the rust
  • D. dehydration of the iron
View Answer & Discuss (24) JAMB 1997
945
Which of the additives could improve the quality of steel?
  • A. Silicon
  • B. Sulphur and phosphorus
  • C. Carbon
  • D. Chromium and nickel
View Answer & Discuss (4) JAMB 1997
Start a Free Practice Test
 
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Your School's Whatsapp Group - Join Us now