Is admission easier with an undeclared?

<p>This is specifically about the UC's
I'm applying to the college of letters and science in almost all the UC's for chemistry (B.S. / B.A.), but someone brought up that applying undeclared betters your chances. </p>

<p>Can anyone say that this is true for college of letters and science (not schools such as engineering, business, etc.)?</p>

<p>I want to submit my UC application by tonight, and I want a confirmation (or a rejection) on what I heard</p>

<p>Thanks a lot</p>

<p>edit: if you already got into college, graduated from college, or are applying to college - please specify</p>