1. Calorific value

1. A substance which reacts with oxygen giving heat is called a combustible substance. Which one of the following is a combustible substance?
2. Which one of the following has the highest calorific value? 
3. Magnesium ribbon on burning in air produces
Login or Fast registration
Previous topic
Exit to the topic
Next task
Copyright © 2025 YaClass Tech Private Limited Contacts Terms and Conditions Privacy Policy