Quiz on chapter2 (lesson 1,2)

Which of the following process preserves the strategic stock of minerals and limits the environmental pollution?

• Minerals excavation.

• Chemical analysis of the ore

• Recycling.

• Purification from impurities.

Which of the following energy forms contributes to the production of electricity in the hydroelectric power plants?

• Mechanical.

• light.

• Nuclear.

• Thermal.

A process through which the separation of impurities from the minerals occurs.

• Mining.

• Temporary storage.

• purification of minerals.

• depletion

Which of the following represents the chemical formula of the hematite ore?

• FeCO₃

• Fe₃O₄

• FeO

• Fe₂O₃

Which of the following is considered an air pollutant and acts on reducing the iron ore in the blast furnace?

• CO₂

• NO₂

• CO

• SO₃

The rain that its water reacts with sulfur oxides that are produced from burning fossil fuel in air.

• Acid rain

• Basic rain

• rain

• no correct answer

What is the effect of the increased thermal energy that produced from the generator on its efficiency?

• Increases.

• Decreases.

• Not affected.

• fluctuates.

Which of the following compounds is produced when nitric oxide is oxidized in the atmosphere?

• N₂O

• NO₂

• NH₃

• NO

The combustion of Ethan gas in air produces..........

• O₂

• No

• CO

• CO₂

What are the final steps that occur when extracting molten iron from hematite ?

• Burning of coke in the presence of oxygen.

• Determining the percentage of iron in hematite.

• Reduction of carbon dioxide.

• Reduction of iron ore.