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 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
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
271

When a solid substance disappears completely as a gas on heating, the substance is said to have undergone

  • A. evaporation
  • B. distillation
  • C. crystallization
  • D. sublimation
View Answer & Discuss (4) JAMB 2004
272

A chemical reaction is always associated with

  • A. an increase in the composition of one of the substance
  • B. a change in the volume of the reactants
  • C. a change in the nature of the reactants
  • D. the formation of new substance
View Answer & Discuss JAMB 2004
273

If a solution contains 4.9g of tetraoxosulphate (VI) acid, calculate the amount of copper (II) oxide that will react with it
[Cu = 64, O = 16, S = 32, H = 1]

  • A. 0.8g
  • B. 4.0g
  • C. 40.0g
  • D. 80.0g
View Answer & Discuss (8) JAMB 2004
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
274

What volume of gas is evolved at S.t.p if 2g of calcium trioxocarbonate (IV) is added to a solution of hydrochloric acid?
[Ca = 40, C = 12, O = 16, Cl = 35.5, H = 1 Molar volume of a gas at s.t.p = 22.4 dm\(^3\)

  • A. 112 cm3
  • B. 224 cm3
  • C. 448 cm3
  • D. 2240 cm3
View Answer & Discuss (13) JAMB 2004
275

According to charles' law, the volume of a gas becomes zero at

  • A. 0 oC
  • B. -100 oC
  • C. -273 oC
  • D. -373 oC
View Answer & Discuss (9) JAMB 2004
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
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
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now