In which case material will remain safe Stainless steels in

In which case material will remain safe? Stainless steels in hot chloride Brass in diluted ammonia Steel in diluted sulfuric acid Ti alloys in diluted nitrogen tetroxide

Solution

in Ti alloys in diluted nitrogen tetroxide will remain safe .

Nitrogen tetroxide is compatible with a wide spectrum of materials of construction. However, considerable care must be exercised in selecting suitable materials due to the reactivity of the propellant and the need to prevent leaks and spills.

but it does not react with Ti alloy