Post Utme Chemistry Questions
Question 451:
Rusting of iron occurs mainly when iron is exposed to:
- A Hydrogen and argon
- B Chlorine and neon
- C Nitrogen and helium
- D Water and oxygen
Question 452:
Aluminum is represented chemically by the abbreviation:
- A Ar metallic symbol
- B Am metallic symbol
- C Au metallic symbol
- D Al metallic symbol
Question 453:
Helium differs from other noble gases because helium contains:
- A One outer electron
- B Eight outer electrons
- C Two outer electrons
- D Seven outer electrons
Question 454:
The reactivity of alkali metals generally:
- A Increases down the group
- B Changes unpredictably always
- C Decreases down the group
- D Remains completely constant
Question 455:
The raw material supplying carbon monoxide in blast furnaces is:
- A Cryolite molten compound
- B Coke fuel substance
- C Limestone mineral compound
- D Haematite mineral ore