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

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 Agent
Your School's Whatsapp Group - Join Us now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
1031
When a little brine was added to a metal nitrate a white precipitate was formed which first turned violet and then black on exposure to ai. The metal nitrate is therefore?
  • A. sodium nitrate
  • B. mercuric nitrate
  • C. lithium nitrate
  • D. silver nitrate
  • E. potassium nitrate
View Answer & Discuss (6) JAMB 1982
1032

If atom X with six electrons in its outermost shell combines with atom Y with one electron in its outermost shell to form an ionic compound, then?

  • A. six atoms of X will combine with one of Y
  • B. two atoms of X will combine with six of Y
  • C. one atom of X will combine with two of Y
  • D. two atoms of X will combine with one of Y
  • E. one atom of X will combine with six of Y
View Answer & Discuss (12) JAMB 1982
1033
The nitrogen gas obtained by burning an excess of phosphorus in air has a density higher than the nitrogen from nitrogen compounds because the nitrogen from air is contaminated with?
  • A. some unburnt phosporus
  • B. P2O5 vapour
  • C. some oxygen
  • D. rare gases
  • E. carbondioxide
View Answer & Discuss (4) JAMB 1982
Post UTME Past Questions Agent
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
1034
When air is passed through alkaline pyrogallol and then over quicklime, the only gases left are?
  • A. nitrogen and carbondoxide
  • B. the rare gases
  • C. nitrogen and oxygen
  • D. nitrogen and the rare gases
  • E. nitrogen, carbonioxide and the rare gases
View Answer & Discuss (11) JAMB 1982
1035
9.8g of solid potassium chlorate (KCIO3) were added to 40 cm3 of water and heated to dissolve all the solid. As he solution cooled, crystals of potassium chlorate started forming at 60°C. The solubility of potassium chlorate at 66°C is therefore?
  • A. 24.5 mole per dm3
  • B. 0.2 mole per dm3
  • C. 10.0 mole per dm3
  • D. 20.0 mole per dm3
  • E. 2.0 mole per dm3
View Answer & Discuss (15) JAMB 1982
Start a Free Practice Test
 
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
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent