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We present the Chandra ACIS-S3 data of the old classical nova RR Pic (1925).The source has a count rate of 0.067+/-0.002 c/s in the 0.3-5.0 keV energyrange. We detect the orbital period of the underlying binary system in theX-ray wavelengths. We also find that the neutral Hydrogen column densitydiffers for orbital minimum and orbital maximum spectra with values0.25(+0.23-0.18)x10^22 cm^-2 and 0.64(+0.13-0.14)x10^22 cm^-2 at 3sigmaconfidence level. The X-ray spectrum of RR Pic can be represented by acomposite model of bremsstrahlung with a photoelectric absorption, twoabsorption lines centered around 1.1-1.4 keV and 5 Gaussian lines centered atemission lines around 0.3-1.1 keV corresponding to various transitions of S, N,O, C, Ne and Fe . The bremsstrahlung temperature derived from the fits rangefrom 0.99 to 1.60 keV and the unabsorbed X-ray flux is found to be2.5(+0.4-1.2)x10^-13 erg cm^-2 s^-1 in the 0.3-5.0 keV range with a luminosityof (1.1\pm0.2)x10^31 erg s^-1 at 600 pc. We also detect excess emission in thespectrum possibly originating from the reverse shock in the ejecta.

RR Pic (1925): A Chandra X-ray View