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Corrosion of metals at the joints is minimized by joining dissimilar metals with adhesives because ____________

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Corrosion of metals at the joints is minimized by joining dissimilar metals with adhesives because ____________

(a) Direct metal to metal contact is avoided

(b) Adhesive act as a lubricator at the joints

(c) Metals are covered with adhesives

(d) Adhesives prevent the exposure to environment

I had been asked this question in semester exam.

This interesting question is from Adhesives, their Advantages and Limitations in portion Polymers of Engineering Chemistry I

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Right option is (a) Direct metal to metal contact is avoided

Easiest explanation: Corrosion of metals at the joints is minimized by joining dissimilar metals with adhesives because direct metal to metal contact is avoided so galvanic action is reduced.

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