Which of the following alloy is used in making magnet ? A. Duralumin B. Stainless steel C. Alnico D. Magnalium

The correct answer is C. Alnico.

Alnico is a strong permanent magnet made from an alloy of aluminium, nickel, cobalt, and iron. It is one of the most common types of permanent magnets, and is used in a variety of applications, including motors, generators, loudspeakers, and sensors.

Duralumin is an alloy of aluminium, copper, magnesium, and silicon. It is a strong, lightweight alloy that is used in a variety of applications, including aircraft, automobiles, and machinery.

Stainless steel is a type of steel that is resistant to corrosion. It is made from a variety of alloys,

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