Post UTME Past Questions Agent
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

WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
Your School's Whatsapp Group - Join Us now
2171

The conclusion from Rutherford's radioactive substance alpha-scattering experiment is that

  • A. atoms are mostly empty space with a samll
  • B. emissions from radioactive substances consist of three main components
  • C. there is unclear pull on orbital electrons
  • D. electrons are deflected by both magnetic and electric fields
View Answer & Discuss (1) WAEC 2001
2172

If a metal R forms a compound with the formula R(NO3)2 the formula of its tetraoxosulphate (VI) is

  • A. R(SO4)2
  • B. RSO4
  • C. R2SO4
  • D. R2(SO4)3
View Answer & Discuss WAEC 2001
2173

Which of the following decreases when a given mass of gas is compressed to half its initial volume?

  • A. Average intermolecular distance
  • B. Frequency of collisions
  • C. Number of molecules present
  • D. Atomic radius of each particle
View Answer & Discuss (4) WAEC 2001
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
2174
What volume of hydrogen will be produced if 100cm3 of ammonia is completely decomposed at constant temperature and pressure? The equation for the reaction is 2NH3(g) → N2(g) + 3H2(g)
  • A. 50cm3
  • B. 150cm3
  • C. 200cm3
  • D. 300cm3
View Answer & Discuss (3) WAEC 2001
2175

The gas given off when NH4Cl is heated with an alkali is

  • A. H2
  • B. CI2
  • C. N 2
  • D. NH 3
View Answer & Discuss (2) WAEC 2001
Start a Free Practice Test
 
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 - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Post UTME Past Questions Agent