Comments are enabled on WordPress posts and pages by default. You can change the default for new posts or pages, as well as enable/disable comments on posts or pages you’ve already published.
You can change the defaults for new posts or pages on the Settings -> Discussion screen.
To hide comments on the specific page go to “WP-admin > Pages” and click the “quick edit” link. You will see the “Allow Comments” checkbox (fig. 1):
Fig. 1. Disable comments via “quick edit.
You can do the same in the Page/Post Adding/Editing interface. Simply check the “Discussion” checkbox in Screen Option – corresponding “Discussion” box will appear (fig. 2):
Fig. 2. Disable comments from “Discussion” box.
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