  Besides supersymmetry, the other prime candidate of physics beyond the
standard model (SM), crying out for verification at the CERN Large Hadron
Collider (LHC), is extra-dimension. To hunt for effects of Kaluza-Klein (KK)
excitations of known fermions and bosons is very much in the agenda of the LHC.
These KK states arise when the SM particles penetrate in the extra space-like
dimension(s). In this paper, we consider a 5d scenario, called `Universal Extra
Dimension', where the extra space coordinate, compactified on an orbifold
$S^1/Z_2$, is accessed by {\em all} the particles. The KK number ($n$) is
conserved at all tree level vertices. This entails the production of KK states
in pairs and renders the lightest KK particle stable, which leaves the detector
carrying away missing energy. The splitting between different KK flavors is
controlled by the zero mode masses and the bulk- and brane-induced one-loop
radiative corrections. We concentrate on the production of an $n=1$ KK
electroweak gauge boson in association with an $n=1$ KK quark. This leads to a
signal consisting of {\em only one} jet, one or more leptons and missing $p_T$.
For definiteness we usually choose the inverse radius of compactification to be
$R^{-1} = 500$ GeV, which sets the scale of the lowest lying KK states. We show
on a case-by-case basis (depending on the number of leptons in the final state)
that with 10 ${\rm fb}^{-1}$ integrated luminosity at the LHC with $\sqrt{s}$ =
14 TeV this signal can be detected over the SM background by imposing
appropriate kinematic cuts. We record some of the expectations for a possible
intermediate LHC run at $\sqrt{s}$ = 10 TeV and also exhibit the integrated
luminosity required to obtain a 5$\sigma$ signal as a function of $R^{-1}$.
