Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

Chemistry 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
Post UTME Past Questions Agent
3006

Copper sulphate solution is electolysed using platinum electrodes A. current of 0.193 amperes is passed for 2hrs. How many grams of copper are deposited? (cu = 63.5, F = 96500 coulombs)

  • A. 0.457g
  • B. 0.500g
  • C. 0.882g
  • D. 0.914g
  • E. 1.00g
View Answer & Discuss (11) JAMB 1985
3007

In the above experiment, the litmus paper will initially

  • A. be bleached
  • B. turn green
  • C. turn red
  • D. turn blue
  • E. turn black
View Answer & Discuss (8) JAMB 1983
3008

In the experiment above, a current was passed for 10 minutes, and 0.63g of copper was found to be deposited on the cathode of CuSO4 cells. The weight of silver deposited on the cathode of AgNO3 cell during the same period would be? [Cu = 63, Ag = 108]

  • A. 0.54g
  • B. 1.08g
  • C. 1.62g
  • D. 2.16g
  • E. 3.24g
View Answer & Discuss (21) JAMB 1983
WAEC and NECO CBT App for Mobile Devices - 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
Your School's Whatsapp Group - Join Us now
3009
1.00g of mixture of calcium carbonate and calcium oxide liberated 0.33g of carbon dioxide on strong heating. The percentage of calcium oxide in the mixture is? (Ca = 40, C = 12, O = 16)
  • A. 5
  • B. 15
  • C. 25
  • D. 35
  • E. 50
View Answer & Discuss (3) JAMB 1982
3010
Which of the following represents a precipitation reaction?
  • A. H2SO4 + NaCl \(\to\) NaHSO4 + HCl
  • B. Fe +H2SO4 \(\to\) FeSO4 + H2
  • C. 4HCl + MnO2 \(\to\) MnCl2 + 2H2O + Cl2
  • D. Na2SO4 + pb(NO3) \(\to\) PbSO4 + 2NaNO
  • E. CuO +2HCl \(\to\) Cl2 + H2O
View Answer & Discuss (7) JAMB 1981
Start a Free Practice Test
 
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
Post UTME Past Questions Agent
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now