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

Chemistry WAEC Past Questions

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

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
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
1226

The following glasswares are used to measure the volume of liquids EXCEPT

  • A. graduated beaker
  • B. pipette
  • C. test tube
  • D. burette
View Answer & Discuss (1) WAEC 2017
1227

Pauli exclusion principle is related to

  • A. quantity of electrons in the valence shell
  • B. filling the orbitals with lower energy first
  • C. the filling of degenerated orbitals
  • D. quantum numbers of electrons
View Answer & Discuss (3) WAEC 2017
1228

The species with no electron in the 3d-orbital is

  • A. \(Zn^{2+}\)
  • B. \(Sc^{3+}\)
  • C. Cu
  • D. \(Mn\)
View Answer & Discuss WAEC 2017
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
1229

The seperation of Nitrogen from oxygen using fractional distillation of air is possible because

  • A. nitrogen is less dense than oxygen
  • B. oxygen is more reactive than nitrogen
  • C. of the difference in their boiling points
  • D. they belong to the same period
View Answer & Discuss WAEC 2017
1230

The purity of a solid sample can best be determined by its

  • A. boiling point
  • B. melting point
  • C. conductivity
  • D. solubility
View Answer & Discuss (1) WAEC 2017
Start a Free Practice Test
 
Your School's Whatsapp Group - Join Us now
Post UTME Past Questions Agent
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