JAMB Chemistry 2011 Objective — Question 31
Question 31 of 49 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2011 Objective paper, with the correct answer and a full explanation.
Advertisement
The effect of the presence of impurities such as carbon and sulphur on iron is that they
- A. A. lower its melting pointCorrect
- B. B. give it high tensile strength
- C. C. make it malleable and ductile
- D. D. increase its melting point
Explanation
Presence of impurities in iron lowers its melting point (and also increases the boiling point of a liquid it may be dissolved in, per the general effect of impurities).
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.