Steel Mills Test Smoke-Out

The video tutorial discusses the use of a secret chemical to create a blackout at the steel mills in Gary. This chemical forms a defensive curtain to protect against air raids. The demonstration is successful, showcasing modern chemical science's role in defense, with the smokestack acting as an air raid warden.

What was the unique method used at the steel mills in Gary to achieve a blackout?

• Turning off all lights

• Using a secret chemical

• Building a large wall

• Covering the plant with tarps

What was the purpose of the heavy screen created by the chemical?

• To reduce pollution

• To enhance worker safety

• To improve plant efficiency

• To protect against air raids

How did the chemical screen function as a defense mechanism?

• By shrouding the plant

• By absorbing sound

• By reflecting sunlight

• By emitting a loud noise

What was the outcome of the demonstration involving the chemical screen?

• It failed to protect the plant

• It was a partial success

• It caused environmental damage

• It was a complete success

What role did modern chemical science play in the demonstration?

• It helped reduce costs

• It listed the smokestack as an air raid warden

• It increased the plant's output

• It improved worker productivity