[ Post UTME Begins ]: View The List Of Schools That Have Released 2026 Post-UTME Forms.
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
  1. Home
  2. Classroom
  3. Chemistry

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
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
2426
How many orbitals are associated with the p-sub energy level?
  • A. 2
  • B. 3
  • C. 5
  • D. 6
View Answer & Discuss (4) WAEC 2009
2427
Which of the following elements has the electronic configuration:1s22s22p63s23p1? [11Na, 13A1,
14N,16S]
  • A. Al
  • B. Na
  • C. N
  • D. S
View Answer & Discuss (3) WAEC 2009
2428
The following properties are characteristics of transition elements except
  • A. formation of complex ions
  • B. fixed oxidation states
  • C. formation of coloured compounds
  • D. catalytic abilities
View Answer & Discuss WAEC 2009
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
2429

Which of the following ions is isoelectronic with neon? [\(_3\)Li, \(_9\)F, \(_{10}\)Ne, \(_{17}\)CI,\(_{19}\)K ]

  • A. CI-
  • B. F-
  • C. K+
  • D. Li,+
View Answer & Discuss (6) WAEC 2009
2430
Which of the following electronic configurations correctly represents an element in period 3 of the periodic table?
  • A. 1s2 2s2 2p2
  • B. 1s2 2s2 2p6
  • C. 1s2 2s2 2p6 3s2 3p4
  • D. 1s2 2s2 2p6 3s2 3p6 4s1
View Answer & Discuss (3) WAEC 2009
Start a Free Practice Test
 
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
Post UTME Past Questions Agent
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now