Post-UTME Chemistry 2014 Objective — Question 5
Question 5 of 10 from the Post-UTME Screening (Post-UTME) Chemistry 2014 Objective paper, with the correct answer and a full explanation.
Advertisement
Hydrogen is used in oxy-hydrogen flames for melting metals because it
- A. involves a lot of heat when burntCorrect
- B. combines explosively with oxygen
- C. is a very light gas
- D. is a rocket fuel
Explanation
Burning hydrogen in oxygen releases a large amount of heat, producing the very high temperatures needed for melting metals. (No printed answer key for this session; answer worked out independently.)
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.