Post UTME Past Questions Agent
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

WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download 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
321

Phenolphthalein in acidic solution is

  • A. red
  • B. orange
  • C. colourless
  • D. yellow
View Answer & Discuss (9) JAMB 2005
322

When iron is exposed to moisture and it rusts, the value of ΔG for the reaction is

  • A. neutral
  • B. zero
  • C. positive
  • D. negative
View Answer & Discuss (12) JAMB 2005
323

In which of the following reactions can the oxidation number of the nitrogen be said to have increased?

  • A. 2NO(g) + O2(g) → 2NO2(g)
  • B. 2NO(g) + Cl2(g) → 2NOCl(l)
  • C. FeSO4(aq) + NO(g) → Fe(NO)SO4(s)
  • D. NO(g) + Br2(l) → 2NOBr(l)
View Answer & Discuss (18) JAMB 2005
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
324

2H\(_2\) + O\(_2\) → 2H\(_2\)O    ΔH = - 571kJ
In the equation above, how much heat will be liberated if 12.0g of hydrogen is burnt in excess oxygen?

  • A. -1142 kJ
  • B. -571 kJ
  • C. +1142 kJ
  • D. -1713 kJ
View Answer & Discuss (9) JAMB 2005
325

A concentrated solution containing H\(^+\), Cu\(^{2+}\), OH\(^-\) and Cl\(^-\) was electrolyzed using platinum electrodes.
The ion that will be discharged at the cathode is?

  • A. Cu2+
  • B. Cl-
  • C. H+
  • D. OH-
View Answer & Discuss (24) JAMB 2005
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
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent