Answered

can be added to improve hardness, strength, creep resistance, and corrosion resistance.
Oa. Aluminum, silicon, and titanium
Ob. Potassium, sodium, and zirconium
c. Oxygen, argon, and nitrogen
Od. Carbon, chromium, and vanadium



Answer :

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Final answer:

Carbon, chromium, and vanadium are essential for enhancing various material properties like hardness and corrosion resistance.


Explanation:

Carbon, chromium, and vanadium can be added to improve hardness, strength, creep resistance, and corrosion resistance in various applications. For example, they are commonly used in alloys such as high-speed steels, cemented carbides, magnets, and electroplating due to their enhancing properties.


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