[ Post UTME Begins ]: View The List Of Schools That Have Released 2026 Post-UTME Forms.
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Your School's Whatsapp Group - Join Us now
  1. Home
  2. Classroom
  3. Chemistry
  4. WAEC 2020
  5. Which of the followi...

Which of the following reactions are always exothermic? 1. Neutralization Il. Decomposition III. Combustion

Chemistry
WAEC 2020

Which of the following reactions are always exothermic? 1. Neutralization Il. Decomposition III. Combustion

  • A. I and II only
  • B. I and III only
  • C. II and IIl only
  • D. I, II and III
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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
Correct Answer: Option B
Explanation
  • LIST OF EXOTHERMIC REACTIONS
  • any combustion reaction.
  • a neutralization reaction.
  • rusting of iron (rust steel wool with vinegar)
  • the thermit reaction.
  • reaction between water and calcium chloride.
  • reaction between sodium sulfite and bleach (dilute sodium hypochlorite)
  • reaction between potassium permanganate and glycerol.
Previous Next
Go back to Chem classroom

Report an Error Ask A Question Download App
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
{{ text }}

Contributions ({{ comment_count }})

Please wait...

{{ settings.no_comment_msg ? settings.no_comment_msg : 'There are no comments' }}

Quick Questions

Post your Contribution

Please don't post or ask to join a "Group" or "Whatsapp Group" as a comment. It will be deleted. To join or start a group, please click here

{{ quote.posted_by.display_name }}
{{ settings.form_textarea_description }}
 
Post UTME Past Questions Agent
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
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
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
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts