Which of the following does NOT contain aluminum as a component?

Container for trioxonitrate (v) acid

The function of sulphur during the vulcanization of rubber is to

form chains which bind rubber molecules together

act as a catalyst for the polymerization of rubber molecules

convert rubber from thermosetting to thermoplastic polymer

form chains which bind rubber molecules together

break down rubber polymer molecules

Which of the following increases as boiling water changes to steam?

degree of disorder of the system

Which of the following roles does sodium chloride play in preparation? It

purifies the soap, accelerates the decomposition of fat and oil

converts the fat acid to its sodium salt

JAMB UTME - Chemistry - 2022 | Green Bridge CBT

Question 1 Report

In the extraction of iron, hot air is introduced into the blast furnace through?

valves

open-hearths

arcs

tuyeres

Answer Details

In the extraction of iron, hot air is introduced into the blast furnace through tuyeres. Tuyeres are nozzles that are located at the bottom of the blast furnace, and they are used to blow hot air into the furnace. The hot air helps to burn the coke (a fuel made from coal) which provides the heat needed to melt the iron ore. The air also helps to remove the waste gases that are produced during the reaction, allowing the iron to be extracted more efficiently.






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