Post-UTME Chemistry 2014 Objective — Question 10

Question 10 of 10 from the Post-UTME Screening (Post-UTME) Chemistry 2014 Objective paper, with the correct answer and a full explanation.

In the extraction of iron in the blast furnace, limestone is used to

A. release CO2 for the reaction
B. reduce the iron ore
C. increase the strength of the iron
D. remove impuritiesCorrect

Explanation

Limestone decomposes to form CaO, which combines with silica impurities to form slag, removing impurities from the molten iron. (No printed answer key for this session; answer worked out independently.)

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.

Create free account

More questions from Chemistry 2014 Objective More Chemistry past papers