400 Bad Request - The request cannot be fulfilled due to bad syntax.

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Can an HTTP status 400 be a substitute for a 410?

As I shift many URL's on my site from non-friendly to friendly, I came across an old URL that was used for testing that google later ended up scanning but now I no longer use the URL. Its in the ...
6
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1answer
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When to reply 400 Bad Request

According to www.w3.org, a Web server should reply with status code 400 Bad Request if: "The request could not be understood by the server due to malformed syntax. The client SHOULD NOT repeat ...