Question

Which of the following statements are true with respect to the process of annealing?

• A. It removes internal stress of a substance.
• B. It increases toughness of a substance.
• C. It increases the flexibility of a substance.
• D. None of the above.

Answer 1

Answer: (A), (B)

The correct options are
A It removes internal stress of a substance.
B It increases toughness of a substance.

• Annealing is a process of heat treatment that increases the temperature of the metal to a certain value and hold it for a particular time period.
• It helps to restore the ductility of a metal which can be lost due to repeated hammering or any other work done on the metal.
• This process helps to remove the internal stress and reduce its hardness, allowing to easily work on the metal.