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Which acid is used in the pickling process of metals?

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Question: Which acid is used in the pickling process of metals?

Options:

  1. Hydrochloric acid
  2. Sulfuric acid
  3. Nitric acid
  4. Phosphoric acid

Correct Answer: Hydrochloric acid

Solution: 

Hydrochloric acid is commonly used in the pickling process to remove rust and scale from metals.

Which acid is used in the pickling process of metals?

Practice Questions

Q1
Which acid is used in the pickling process of metals?
  1. Hydrochloric acid
  2. Sulfuric acid
  3. Nitric acid
  4. Phosphoric acid

Questions & Step-by-Step Solutions

Which acid is used in the pickling process of metals?
  • Step 1: Understand what pickling means. Pickling is a process used to clean metals.
  • Step 2: Identify the purpose of pickling. It removes rust and scale from the surface of metals.
  • Step 3: Learn about the chemicals used in pickling. Different acids can be used for this process.
  • Step 4: Find out which acid is most commonly used. Hydrochloric acid is the acid that is often used in pickling.
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