Caustic embrittlement is due to ans. low alkaline water None of the above Strong acidic water high alkaline water

Caustic embrittlement is a phenomenon typically observed in certain types of materials, particularly in metals that are subjected to high temperatures and stress in the presence of high alkaline conditions. This process can lead to significant degradation in the material's mechanical properties, making it susceptible to cracking and failure.

The correct answer to your question is:

High alkaline water.

Explanation

1. Nature of Water: Caustic embrittlement occurs when water is highly alkaline, which creates a caustic environment. This can lead to the dissolution of protective films on metal surfaces, thereby exposing them to aggressive attack and embrittlement.

2. Mechanism: In alkaline conditions, the interaction between stress and the caustic agent can result in hydrogen embrittlement, where hydrogen enters the metal matrix and causes internal cracks. This is primarily observed in boiler tubes and other high-temperature, high-pressure environments.

3. Implications: Understanding the conditions that lead to caustic embrittlement is crucial for materials selection and engineering practices, particularly in industries such as power generation, chemical processing, and water treatment.

In summary, caustic embrittlement is associated with the presence of high alkaline water, which creates a conducive environment for this harmful process to occur.